Need help hooking up illuminated pushbutton switch

J

John Corliss

Guest
Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

Thanks in advance.

--
John Corliss
 
John Corliss wrote:
Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg
Click to expand...
In this diagram the internal indicator light has only
one connection (the 'A' terminal is unconnected). There
is no closed circuit.

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

Thanks in advance.
Click to expand...
You need to determine what the internal connections
are within the switch and work from there. They
likely look to be as follows, but you can verify
with a multimeter:

: C B
: O O
: | |
: | / |
: | / |
: +---o' o---+
: |
: |
: (~) Light
: |
: |
: O
: A

In which case the first diagram works as advertised:

: /
: /
: C O------o' o----+------O B <-----.
: | |
: (~) [LOAD]
: | |
: A O-----------------+------O A <-----'

The 'A' terminal becomes a 'common' node for the loads
comprising the internal indicator light and the
external load (fan).
 
On Mon, 27 Sep 2010 04:34:29 -0700, John Corliss <q34wsk20@yahoo.com>
wrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?
Click to expand...
As shown in the original diagram. Hook up the feed to A and C, where C
is hot (the black wire) and A is neutral (white). Hook up your load (the
fan) to A and B. The lamp is probably a small neon glow lamp.

--
Rich Webb Norfolk, VA
 
Rich Webb wrote:
John Corlisswrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

As shown in the original diagram. Hook up the feed to A and C, where C
is hot (the black wire) and A is neutral (white). Hook up your load (the
fan) to A and B. The lamp is probably a small neon glow lamp.
Click to expand...
Thanks, but I already tried that method and the light won't come on.
Pretty sure it's because the small connector "A" isn't connected to
anything.

I don't know why the switch wasn't manufactured with the light correctly
connected in parallel internally so that all one would have to do is to
connect the switch serially to the fan (load).

I do know that the light is an LED and has a resistor inline to it.

--
John Corliss
 
On Mon, 27 Sep 2010 04:34:29 -0700, John Corliss <q34wsk20@yahoo.com>
wrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

Thanks in advance.
Click to expand...

Looks to me like they are giving you two+ options - depending on where
"A" connects the light will be on when the switch is closed signifying
power to the load, or could be on when the switch is open - making it
easy to locate the switch in the dark. Or if the load is a heater,
you might wire it across the thermostat and signal when the heater is
drawing current, or some other semi-automatic event.
--
 
On Mon, 27 Sep 2010 05:40:42 -0700, John Corliss <q34wsk20@yahoo.com>
wrote:

Rich Webb wrote:
John Corlisswrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

As shown in the original diagram. Hook up the feed to A and C, where C
is hot (the black wire) and A is neutral (white). Hook up your load (the
fan) to A and B. The lamp is probably a small neon glow lamp.

Thanks, but I already tried that method and the light won't come on.
Pretty sure it's because the small connector "A" isn't connected to
anything.

I don't know why the switch wasn't manufactured with the light correctly
connected in parallel internally so that all one would have to do is to
connect the switch serially to the fan (load).

I do know that the light is an LED and has a resistor inline to it.
Click to expand...
The schematic suggests it is a neon lamp. What voltage are you
running at?
--
 
default wrote:
On Mon, 27 Sep 2010 05:40:42 -0700, John Corliss<q34wsk20@yahoo.com
wrote:

Rich Webb wrote:
John Corlisswrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

As shown in the original diagram. Hook up the feed to A and C, where C
is hot (the black wire) and A is neutral (white). Hook up your load (the
fan) to A and B. The lamp is probably a small neon glow lamp.

Thanks, but I already tried that method and the light won't come on.
Pretty sure it's because the small connector "A" isn't connected to
anything.

I don't know why the switch wasn't manufactured with the light correctly
connected in parallel internally so that all one would have to do is to
connect the switch serially to the fan (load).

I do know that the light is an LED and has a resistor inline to it.

The schematic suggests it is a neon lamp. What voltage are you
running at?
Click to expand...
110 ac

--
John Corliss
 
On Mon, 27 Sep 2010 06:27:45 -0700, John Corliss <q34wsk20@yahoo.com>
wrote:

default wrote:
On Mon, 27 Sep 2010 05:40:42 -0700, John Corliss<q34wsk20@yahoo.com
wrote:

Rich Webb wrote:
John Corlisswrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

As shown in the original diagram. Hook up the feed to A and C, where C
is hot (the black wire) and A is neutral (white). Hook up your load (the
fan) to A and B. The lamp is probably a small neon glow lamp.

Thanks, but I already tried that method and the light won't come on.
Pretty sure it's because the small connector "A" isn't connected to
anything.

I don't know why the switch wasn't manufactured with the light correctly
connected in parallel internally so that all one would have to do is to
connect the switch serially to the fan (load).

I do know that the light is an LED and has a resistor inline to it.

The schematic suggests it is a neon lamp. What voltage are you
running at?

110 ac
Neon lamps have a resistor in series - 75 - 100K as a rule, they
Click to expand...
should ionize at ~80 volts, BUT sometimes neons that haven't been used
recently don't ionize readily - the thing that may get it going
(assuming there is voltage across it) is to shine a bright light at
it. (learned that from using neon plasma panels in the 70's).

An LED would require a rectifier and a resistor (or capacitor) to
limit voltage. In the case of a resistor, it would be physically
large since it has to drop ~110 volts, and at 20 ma that's two+ watts.
--
 
default wrote:
John Corlisswrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

Thanks in advance.

Looks to me like they are giving you two+ options - depending on where
"A" connects the light will be on when the switch is closed signifying
power to the load, or could be on when the switch is open - making it
easy to locate the switch in the dark. Or if the load is a heater,
you might wire it across the thermostat and signal when the heater is
drawing current, or some other semi-automatic event.
Click to expand...
Right, but what I want is for the light to come on when I press the
button to turn on the fan (or hood light, since I have two of these
switches.)

--
John Corliss
 
On Mon, 27 Sep 2010 06:35:17 -0700, John Corliss <q34wsk20@yahoo.com>
wrote:

default wrote:
John Corlisswrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

Thanks in advance.

Looks to me like they are giving you two+ options - depending on where
"A" connects the light will be on when the switch is closed signifying
power to the load, or could be on when the switch is open - making it
easy to locate the switch in the dark. Or if the load is a heater,
you might wire it across the thermostat and signal when the heater is
drawing current, or some other semi-automatic event.

Right, but what I want is for the light to come on when I press the
button to turn on the fan (or hood light, since I have two of these
switches.)
Click to expand...
Than the second schematic is correct, and it should light.
--
 
On Mon, 27 Sep 2010 05:40:42 -0700, John Corliss <q34wsk20@yahoo.com>
wrote:

Rich Webb wrote:
John Corlisswrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

As shown in the original diagram. Hook up the feed to A and C, where C
is hot (the black wire) and A is neutral (white). Hook up your load (the
fan) to A and B. The lamp is probably a small neon glow lamp.

Thanks, but I already tried that method and the light won't come on.
Pretty sure it's because the small connector "A" isn't connected to
anything.
Click to expand...
If you're trying to ohm it out, remember that a neon lamp is essentially
an open circuit to low voltage DC, so there will not appear to be any
continuity between terminal A and either B or C.

I don't know why the switch wasn't manufactured with the light correctly
connected in parallel internally so that all one would have to do is to
connect the switch serially to the fan (load).

I do know that the light is an LED and has a resistor inline to it.
Click to expand...
Bet its an NE-2 with a ~500K current-limiting resistor.

--
Rich Webb Norfolk, VA
 
Thanks for to you and for all the others for replying!

Greg Neill wrote:
John Corliss wrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

In this diagram the internal indicator light has only
one connection (the 'A' terminal is unconnected). There
is no closed circuit.
Click to expand...
Right. I've got two of these switches, one for the range hood fan and
the other for the range hood light. I hooked up one switch for the range
hood fan, leaving its "A" terminal unconnected. The switch works fine
but its light remains out when the fan is running.

You need to determine what the internal connections
are within the switch and work from there. They
likely look to be as follows, but you can verify
with a multimeter:

: C B
: O O
: | |
: | / |
: | / |
: +---o' o---+
: |
: |
: (~) Light
: |
: |
: O
: A

In which case the first diagram works as advertised:
Click to expand...
I did run a multimeter across it yesterday. I can get continuity between
"B" and "C" via clicking the switch, but no continuity through "A"
regardless of the switch position. This is probably because the
illumination is neon light with a resistor attached to it in series. I
know this because I disassembled one of the switches yesterday but only
up to the point where I realized that going further would be
destructive. Not wanting to break the switch, I reassembled it.

: /
: /
: C O------o' o----+------O B<-----.
: | |
: (~) [LOAD]
: | |
: A O-----------------+------O A<-----'

The 'A' terminal becomes a 'common' node for the loads
comprising the internal indicator light and the
external load (fan).
Click to expand...
If you look at the photo of the switch at the RadioShack link I gave,
you can see that the "A" terminal is the smallest one. And when I took
the switch apart, I noticed that terminal is connected to a very small
wire, all that's needed for the small amount of electricity it takes to
run the light.

Frankly, I think the original schematic:

A
A -------------------+------O
|
/ (~)<----(light)
/ |
C --------o' o----+------O
C B

is a bad one. Specifically:

Why are there two "A"s on the diagram?
Why are there two "C"s?
Where's the load symbol?
Why are "A" and "C" shown as the main connectors when clearly, after a
cursory examination of the actual switch, it's "B" and "C" that are the
main terminals?
Should I run a wire from the "A" terminal to the "B" terminal?

I want the light to come on only when the hood fan or hood light is
running, not be on all the time.

Please forgive me if my questions are stupid. I'm just a home-owner
trying to do a repair.

I just noticed that the reviews at the RadioShack site:


http://www.radioshack.com/product/index.jsp?productId=2062519#showFullReviews

discuss the same problem I've encountered.

--
John Corliss
 
John Corliss wrote:
Thanks for to you and for all the others for replying!

Greg Neill wrote:
John Corliss wrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the
switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

In this diagram the internal indicator light has only
one connection (the 'A' terminal is unconnected). There
is no closed circuit.

Right. I've got two of these switches, one for the range hood fan and
the other for the range hood light. I hooked up one switch for the range
hood fan, leaving its "A" terminal unconnected. The switch works fine
but its light remains out when the fan is running.

You need to determine what the internal connections
are within the switch and work from there. They
likely look to be as follows, but you can verify
with a multimeter:

C B
O O
| |
| / |
| / |
+---o' o---+
|
|
(~) Light
|
|
O
A

In which case the first diagram works as advertised:

I did run a multimeter across it yesterday. I can get continuity between
"B" and "C" via clicking the switch, but no continuity through "A"
regardless of the switch position. This is probably because the
illumination is neon light with a resistor attached to it in series. I
know this because I disassembled one of the switches yesterday but only
up to the point where I realized that going further would be
destructive. Not wanting to break the switch, I reassembled it.

/
/
C O------o' o----+------O B<-----.
| |
(~) [LOAD]
| |
A O-----------------+------O A<-----'

The 'A' terminal becomes a 'common' node for the loads
comprising the internal indicator light and the
external load (fan).

If you look at the photo of the switch at the RadioShack link I gave,
you can see that the "A" terminal is the smallest one. And when I took
the switch apart, I noticed that terminal is connected to a very small
wire, all that's needed for the small amount of electricity it takes to
run the light.

Frankly, I think the original schematic:

A
A -------------------+------O
|
/ (~)<----(light)
/ |
C --------o' o----+------O
C B

is a bad one. Specifically:

Why are there two "A"s on the diagram?
Click to expand...
Because it is physically the same terminal. It's
simply drawn as it is to provide clarity in the
layout of the circuit and the logical flow of the
connections.

Why are there two "C"s?
Click to expand...
Same as above. This is a common way to represent
connections for clarity in a diagram. If you see
two (or more) terminal connections with the same
label, it means that they are in fact physically
connected either by a conductor, or because they
really are the same physical point.

Where's the load symbol?
Click to expand...
The assumption is that the load is connected to the
right hand indicated terminals points which are
extensions of terminals A and B.
Note that a typical convention is to draw a circuit
so that the signal or power 'flows' from left to
right across the diagram.

In the physical installation you've probably got
a hot (black) and neutral (white) wire supplying
the power for the whole hood. There will be
connections made with wire nuts. The white wire
will connect directly to both loads via such a
wire nut connection. The black mains wire will
connect to both switches at their "C" terminals,
then on to the loads via their "B" terminals.

If you want the lamps to light, run a separate
wire from the "A" terminals to the white neutral
wire nut connection. If the switches are
adjacent, you should be able to daisy chain the
"A" terminal connections and run a single wire
to the mains neutral connection.

Why are "A" and "C" shown as the main connectors when clearly, after a
cursory examination of the actual switch, it's "B" and "C" that are the
main terminals?
Click to expand...
If you think about it, a switch is generally inserted
into one leg of the mains, while the other is
continuous (uninterrupted). Typically you would put
the switch in the path of the 'hot' mains line, and
the 'neutral' line is continuous from the power
source through to the load:

: /
: C / B
: "HOT" >-----------o' o---------------.
: |
: |
: LOAD
: |
: |
: "NEUTRAL" >----------------------------------'

Should I run a wire from the "A" terminal to the "B" terminal?
Click to expand...
That would short out the light leaving both of its
ends connected to point "B" in the diagram. It would
not light, because there would be no path through the
light from "HOT" to "NEUTRAL".

I want the light to come on only when the hood fan or hood light is
running, not be on all the time.

Please forgive me if my questions are stupid. I'm just a home-owner
trying to do a repair.

I just noticed that the reviews at the RadioShack site:



http://www.radioshack.com/product/index.jsp?productId=2062519#showFullReviews

discuss the same problem I've encountered.
Click to expand...
 
On Mon, 27 Sep 2010 07:07:12 -0700, John Corliss <q34wsk20@yahoo.com>
wrote:

Thanks for to you and for all the others for replying!

Greg Neill wrote:
John Corliss wrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

In this diagram the internal indicator light has only
one connection (the 'A' terminal is unconnected). There
is no closed circuit.

Right. I've got two of these switches, one for the range hood fan and
the other for the range hood light. I hooked up one switch for the range
hood fan, leaving its "A" terminal unconnected. The switch works fine
but its light remains out when the fan is running.

You need to determine what the internal connections
are within the switch and work from there. They
likely look to be as follows, but you can verify
with a multimeter:

: C B
: O O
: | |
: | / |
: | / |
: +---o' o---+
: |
: |
: (~) Light
: |
: |
: O
: A

In which case the first diagram works as advertised:

I did run a multimeter across it yesterday. I can get continuity between
"B" and "C" via clicking the switch, but no continuity through "A"
regardless of the switch position. This is probably because the
illumination is neon light with a resistor attached to it in series. I
know this because I disassembled one of the switches yesterday but only
up to the point where I realized that going further would be
destructive. Not wanting to break the switch, I reassembled it.

: /
: /
: C O------o' o----+------O B<-----.
: | |
: (~) [LOAD]
: | |
: A O-----------------+------O A<-----'

The 'A' terminal becomes a 'common' node for the loads
comprising the internal indicator light and the
external load (fan).

If you look at the photo of the switch at the RadioShack link I gave,
you can see that the "A" terminal is the smallest one. And when I took
the switch apart, I noticed that terminal is connected to a very small
wire, all that's needed for the small amount of electricity it takes to
run the light.

Frankly, I think the original schematic:

A
A -------------------+------O
|
/ (~)<----(light)
/ |
C --------o' o----+------O
C B

is a bad one. Specifically:

Why are there two "A"s on the diagram?
Why are there two "C"s?
Where's the load symbol?
Why are "A" and "C" shown as the main connectors when clearly, after a
cursory examination of the actual switch, it's "B" and "C" that are the
main terminals?
Should I run a wire from the "A" terminal to the "B" terminal?

I want the light to come on only when the hood fan or hood light is
running, not be on all the time.

Please forgive me if my questions are stupid. I'm just a home-owner
trying to do a repair.

I just noticed that the reviews at the RadioShack site:


http://www.radioshack.com/product/index.jsp?productId=2062519#showFullReviews

discuss the same problem I've encountered.
Click to expand...
The switch should interrupt the hot side. You can run neutral directly
from the source to your fan and pigtail it to the A terminal for the
lamp or run a separate wire from the neutral source to the lamp
terminal.


o-------------------------------.
Neutral |
o---------------. |
A | |
,---. .-.
Lamp | = | | |
'---' Fan | |
| '-'
| |
Hot --- | |
o-------o o-----o-----o---------'
C B
(created by AACircuit v1.28.6 beta 04/19/05 www.tech-chat.de)

--
Rich Webb Norfolk, VA
 
On Mon, 27 Sep 2010 07:07:12 -0700, John Corliss wrote:

Frankly, I think the original schematic:

is a bad one.
Click to expand...
Try this one instead:

**********************
* *
L o-------o----o o----o----o--------+
C * \ | * B |
* \ | * |
* \ | * +-+
* | * | | L
* | * | | O
* | * | | A
* | * | | D
****************o***** +-+
A | |
| |
N o-----------------------+-------------+
 
John Corliss wrote:
Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg
Click to expand...
Referring to the schematic cited above:
Connect C to the line side black wire. Connect B to the load
side black wire. Connect A to the white wire.

Ignore most of the replies you got - they simply give you too
much information. Once you have it working, you can come back
and look at the replies and learn from the "extra" information,
but you don't need it (and it may confuse you) to get your
light working the way you want.

Ed

<snip>

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

Thanks in advance.
Click to expand...
 
default wrote:
On Mon, 27 Sep 2010 06:27:45 -0700, John Corliss<q34wsk20@yahoo.com
wrote:

default wrote:
On Mon, 27 Sep 2010 05:40:42 -0700, John Corliss<q34wsk20@yahoo.com
wrote:

Rich Webb wrote:
John Corlisswrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

As shown in the original diagram. Hook up the feed to A and C, where C
is hot (the black wire) and A is neutral (white). Hook up your load (the
fan) to A and B. The lamp is probably a small neon glow lamp.

Thanks, but I already tried that method and the light won't come on.
Pretty sure it's because the small connector "A" isn't connected to
anything.

I don't know why the switch wasn't manufactured with the light correctly
connected in parallel internally so that all one would have to do is to
connect the switch serially to the fan (load).

I do know that the light is an LED and has a resistor inline to it.

The schematic suggests it is a neon lamp. What voltage are you
running at?

110 ac
Neon lamps have a resistor in series - 75 - 100K as a rule, they
should ionize at ~80 volts, BUT sometimes neons that haven't been used
recently don't ionize readily - the thing that may get it going
(assuming there is voltage across it) is to shine a bright light at
it. (learned that from using neon plasma panels in the 70's).

An LED would require a rectifier and a resistor (or capacitor) to
limit voltage. In the case of a resistor, it would be physically
large since it has to drop ~110 volts, and at 20 ma that's two+ watts.
Click to expand...
I've since learned that the light is a neon lamp.

--
John Corliss
 
Rich Webb wrote:
On Mon, 27 Sep 2010 05:40:42 -0700, John Corliss<q34wsk20@yahoo.com
wrote:

Rich Webb wrote:
John Corlisswrote:

Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

As shown in the original diagram. Hook up the feed to A and C, where C
is hot (the black wire) and A is neutral (white). Hook up your load (the
fan) to A and B. The lamp is probably a small neon glow lamp.

Thanks, but I already tried that method and the light won't come on.
Pretty sure it's because the small connector "A" isn't connected to
anything.

If you're trying to ohm it out, remember that a neon lamp is essentially
an open circuit to low voltage DC, so there will not appear to be any
continuity between terminal A and either B or C.

I don't know why the switch wasn't manufactured with the light correctly
connected in parallel internally so that all one would have to do is to
connect the switch serially to the fan (load).

I do know that the light is an LED and has a resistor inline to it.

Bet its an NE-2 with a ~500K current-limiting resistor.
Click to expand...
I've since learned that it's a neon lamp as you say.

--
John Corliss
 
"John Corliss" <q34wsk20@yahoo.com> schreef in bericht
news:a86dnaAsOoLaHD3RnZ2dnUVZ_o6dnZ2d@posted.ccountrynet...
Can somebody please help me figure out how to hook up an illuminated
pushbutton switch that I bought to my range hood? The switch is Radio
Shack part # 275-671:

http://www.radioshack.com/product/index.jsp?productId=2062519

Here's a link to the schematic which came in the package with the switch:

http://img375.imageshack.us/img375/1959/illuminatedswitchwiring.jpg

To me, this wiring diagram doesn't make any sense. The best I can figure
is that it should look like this instead:

http://img837.imageshack.us/img837/1959/illuminatedswitchwiring.jpg

but something isn't right, I know it.

Can somebody please help me figure out how to hook this thing up so that
the light works when I turn on my range hood's fan?

Thanks in advance.

--
John Corliss
Click to expand...
First of all, check whether your switch itself is ok. To do so:
- Connect the line wires to A and B. The light should be always on.
- Connect the line wires to A and C. The light should to be switched on and
off by the switch.
If not the switch and/or the lamp will be defective.

BTW
Do *not* connect B and C to the line wires.

This switch can be used for two purposes:
- To signal whether or not the load is active.
- To light the switch continuously to make it visible even in the dark.

In the first case connect C to the active line and B to the load.
In the second case connect B to the active line and C to the load.
In both cases connect A to the neutral and to the load.

BTW
You can check the switch with a low voltage. The lamp however will require
about a 100Vac to ignite.

The live current from line to load flows through the switch. Hence the thick
wires. The current from load to neutral does not flow through the switch
except for a few mA to light the lamp. For this the thin wire will do.

petrus bitbyter
 
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