Simple design - will it work

[Jim]

Guys

I need to wire up a remote switch for a milling machine in my garage.

Rather than go into a lot of detail all I need to achieve is continuity
betwenn A & B on the linked diagram but I can only use a momentary switch
(SW1)

http://rapidshare.com/files/253373634/2443_001.pdf

Can someone confirm if the planned circuit will work ie when SW1 is
momentarilly closed then continuity will provided aacross A&B until the 12V
power is switched off.


Also on a different topic, I need to connect a 10k pot to my inverter to
vary the power output. Circuit diagram shows 3 connections,

1) +10V (Power terminal of Pot)
2) Analog frequency signal input terminal
3) 0VAnalog common point

Any idea how I identify which pin is which on my pot

Cheers

Jim

 

[petrus bitbyter]

"Jim" <jim@sky.com> schreef in bericht
news:4a548a82$0$25006$ed362ca5@nr5-q3a.newsreader.com...

Guys

I need to wire up a remote switch for a milling machine in my garage.

Rather than go into a lot of detail all I need to achieve is continuity
betwenn A & B on the linked diagram but I can only use a momentary switch
(SW1)

http://rapidshare.com/files/253373634/2443_001.pdf

Can someone confirm if the planned circuit will work ie when SW1 is
momentarilly closed then continuity will provided aacross A&B until the
12V
power is switched off.


Also on a different topic, I need to connect a 10k pot to my inverter to
vary the power output. Circuit diagram shows 3 connections,

1) +10V (Power terminal of Pot)
2) Analog frequency signal input terminal
3) 0VAnalog common point

Any idea how I identify which pin is which on my pot

Cheers

Jim

This circuit will not do what you want it to do. AB will be connected as
long as you keep the momentary switch pushed but will disconnect when you
release that switch almost immediately. To achieve your goal you need a DPST
relay as shown below. (View with fixed font.)


--+--------------------12V
|
|
| +-----+
| | | +---- A
| | | |
| | \ o \ o
X_|_ | \ x1 \ x2
|_/_|- | \. \.
| | o o
| | | |
+-----+ | +---- B
| |
| |
| o |
|=|> |
| o |
| |
| |
| |
-+-----------+----------- -
created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de

If you have the two SPDT relay as in your drawing already available, you can
use them by switching the coils in parallel.


--+------+--------------------12V
| |
| |
| | +-----+
| | | | +---- A
| | | | | | |
| | | o\ o o\ o
X_|_ Y_|_ | \ x \ y
|_/_|- |_/_|- | \. \.
| | | o o
| | | | |
+------+-----+ | +---- B
| |
| |
| o |
|=|> |
| o |
| |
| |
-+------------------+-------------
created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de

As for your pot, you'd connect the pin in the middle to connection 2. The 1
and 3 connection come on both outside pins. You can exchange when required.

petrus bitbyter

 

[baron]

Jim Inscribed thus:

Guys

I need to wire up a remote switch for a milling machine in my garage.

Rather than go into a lot of detail all I need to achieve is
continuity betwenn A & B on the linked diagram but I can only use a
momentary switch (SW1)

http://rapidshare.com/files/253373634/2443_001.pdf

Can someone confirm if the planned circuit will work ie when SW1 is
momentarilly closed then continuity will provided aacross A&B until
the 12V power is switched off.

Yes the relay will work fine !

Also on a different topic, I need to connect a 10k pot to my inverter
to vary the power output. Circuit diagram shows 3 connections,

1) +10V (Power terminal of Pot)
2) Analog frequency signal input terminal
3) 0VAnalog common point

Any idea how I identify which pin is which on my pot

For this, more info is needed !

Cheers

Jim

--
Best Regards:
Baron.

 

[petrus bitbyter]

"petrus bitbyter" <pieterkraltlaatditweg@enditookhccnet.nl> schreef in
bericht news:4a54a500$0$931$e4fe514c@dreader13.news.xs4all.nl...

"Jim" <jim@sky.com> schreef in bericht
news:4a548a82$0$25006$ed362ca5@nr5-q3a.newsreader.com...
Guys

I need to wire up a remote switch for a milling machine in my garage.

Rather than go into a lot of detail all I need to achieve is continuity
betwenn A & B on the linked diagram but I can only use a momentary switch
(SW1)

http://rapidshare.com/files/253373634/2443_001.pdf

Can someone confirm if the planned circuit will work ie when SW1 is
momentarilly closed then continuity will provided aacross A&B until the
12V
power is switched off.


Also on a different topic, I need to connect a 10k pot to my inverter to
vary the power output. Circuit diagram shows 3 connections,

1) +10V (Power terminal of Pot)
2) Analog frequency signal input terminal
3) 0VAnalog common point

Any idea how I identify which pin is which on my pot

Cheers

Jim




This circuit will not do what you want it to do. AB will be connected as
long as you keep the momentary switch pushed but will disconnect when you
release that switch almost immediately. To achieve your goal you need a
DPST relay as shown below. (View with fixed font.)


--+--------------------12V
|
|
| +-----+
| | | +---- A
| | | |
| | \ o \ o
X_|_ | \ x1 \ x2
|_/_|- | \. \.
| | o o
| | | |
+-----+ | +---- B
| |
| |
| o |
|=|> |
| o |
| |
| |
| |
-+-----------+----------- -
created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de

If you have the two SPDT relay as in your drawing already available, you
can use them by switching the coils in parallel.


--+------+--------------------12V
| |
| |
| | +-----+
| | | | +---- A
| | | | | | |
| | | o\ o o\ o
X_|_ Y_|_ | \ x \ y
|_/_|- |_/_|- | \. \.
| | | o o
| | | | |
+------+-----+ | +---- B
| |
| |
| o |
|=|> |
| o |
| |
| |
-+------------------+-------------
created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de

As for your pot, you'd connect the pin in the middle to connection 2. The
1 and 3 connection come on both outside pins. You can exchange when
required.

petrus bitbyter

Rectification: The schematic of the OP will work the same way the second
schematic above does. It's drawn in a (to me) unusual way but electrically
the same except that +12V and GND are exchanged.

petrus bitbyter