6 volts what? Is 12 volts enough?

[meirman]

A friend gave me an external 56K modem without the adapter.

It says 6V = , except the lower line of the = sign is dot dash dot.

Does that mean 6V AC? Thanks.

(It says Industry Canada / Industrie Canada. For a little more effort
it could say 6V AC / 6V Currant Alternatent, or CA, or whatever it is
in French.)

---

Also, I have a 14 volt AC answering machine and a larger than average
12 volt AC adapter. I think the odds are that that is enough to run
the phone machine, yes??

(I hate to ask a stupid question, but I just wanted to check a bit
before I buy the unusual, very narrow with very narrow hole inside,
expensive-for-such-a-little-thing connector at Radio Shack. I just
don't have time now to take off the case and connect it with alligator
clips.)


Meirman

If emailing, please let me know whether
or not you are posting the same letter.

Change domain to erols.com, if necessary.

 

[Jerry G.]

If the label on the back of the modem says 6 Volts, and you connect the 12
Volt supply to it, the modem will most likely be instantly damaged. This is
double the voltage!

The lines " - - - ", or " = = = " indicate the operation is DC, and not
AC going in to the modem. If you get a universal supply for the modem, take
very close attention to the polarity, as well as the voltage. If you cross
the polarity, you will also scrap the modem.

As for your answering machine, if it is rated 14 Volts and you try to run it
on 12 Volts, there is a chance that it may work properly. Just make sure
that the supply is rated high enough in wattage (current) to take the load
of the answering machine. If the design of the machine is critical that it
has to have 14 VAC going in to it and the supply is 12 VAC, the only thing
that can happen, is it may lack proper performance, or not work at all.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"meirman" <meirman@invalid.com> wrote in message
news:r6t170lvrch9qmr4c756hhk387umjp946j@4ax.com...
A friend gave me an external 56K modem without the adapter.

It says 6V = , except the lower line of the = sign is dot dash dot.

Does that mean 6V AC? Thanks.

(It says Industry Canada / Industrie Canada. For a little more effort
it could say 6V AC / 6V Currant Alternatent, or CA, or whatever it is
in French.)

---

Also, I have a 14 volt AC answering machine and a larger than average
12 volt AC adapter. I think the odds are that that is enough to run
the phone machine, yes??

(I hate to ask a stupid question, but I just wanted to check a bit
before I buy the unusual, very narrow with very narrow hole inside,
expensive-for-such-a-little-thing connector at Radio Shack. I just
don't have time now to take off the case and connect it with alligator
clips.)


Meirman

If emailing, please let me know whether
or not you are posting the same letter.

Change domain to erols.com, if necessary.

 

[meirman]

In sci.electronics.repair on Mon, 5 Apr 2004 10:13:20 -0400 "Jerry G."
<jerryg50@hotmail.com> posted:

If the label on the back of the modem says 6 Volts, and you connect the 12
Volt supply to it, the modem will most likely be instantly damaged. This is
double the voltage!

Thanks for answering. I'm sorry. I was trying to indicate two
different questions in the subject line, but it's not clear at all. I
wouldn't use a 12V supply for a 6 volt item. I just can't tell if the
input to this modem is supposed to be 6 Volts AC or 6 volts DC.

The lines " - - - ", or " = = = " indicate the operation is DC, and not

But it's not quite either of these. It's one pair of lines. The upper
line is a little longer than the top line of one = sign, and the lower
line is the same total length but has three segements, equivalent to a
dot, a dash, and a dot. I thought there was a sign something like
this that meant AC output.

AC going in to the modem. If you get a universal supply for the modem, take
very close attention to the polarity, as well as the voltage. If you cross
the polarity, you will also scrap the modem.

It doesn't give any indication of what the polarity should be.
(Unless it makes a difference which line of the = sign is one segment,
and which is three.)

It's a Diamond SupraExpress 56K external modem. But Diamond has been
sold last fall to Best something (not Best Buys), according to their
website, and there is limited support there now. I found the driver,
but no instruction manual.

It also doesn't say which of the two phone jacks is to the wall and
which is to a phone, but either it doesn't matter or I can figure it
out.

As for your answering machine, if it is rated 14 Volts and you try to run it
on 12 Volts, there is a chance that it may work properly. Just make sure
that the supply is rated high enough in wattage (current) to take the load
of the answering machine. If the design of the machine is critical that it
has to have 14 VAC going in to it and the supply is 12 VAC, the only thing
that can happen, is it may lack proper performance, or not work at all.

Thanks. I'll try to let you know when I hook it up, after I find an
adapter plug or something.

Meirman

If emailing, please let me know whether
or not you are posting the same letter.

Change domain to erols.com, if necessary.

 

[Ken Weitzel]

meirman wrote:

In sci.electronics.repair on Mon, 5 Apr 2004 10:13:20 -0400 "Jerry G."
jerryg50@hotmail.com> posted:


If the label on the back of the modem says 6 Volts, and you connect the 12
Volt supply to it, the modem will most likely be instantly damaged. This is
double the voltage!


Thanks for answering. I'm sorry. I was trying to indicate two
different questions in the subject line, but it's not clear at all. I
wouldn't use a 12V supply for a 6 volt item. I just can't tell if the
input to this modem is supposed to be 6 Volts AC or 6 volts DC.


The lines " - - - ", or " = = = " indicate the operation is DC, and not


But it's not quite either of these. It's one pair of lines. The upper
line is a little longer than the top line of one = sign, and the lower
line is the same total length but has three segements, equivalent to a
dot, a dash, and a dot. I thought there was a sign something like
this that meant AC output.


AC going in to the modem. If you get a universal supply for the modem, take
very close attention to the polarity, as well as the voltage. If you cross
the polarity, you will also scrap the modem.


It doesn't give any indication of what the polarity should be.
(Unless it makes a difference which line of the = sign is one segment,
and which is three.)

It's a Diamond SupraExpress 56K external modem. But Diamond has been
sold last fall to Best something (not Best Buys), according to their
website, and there is limited support there now. I found the driver,
but no instruction manual.

It also doesn't say which of the two phone jacks is to the wall and
which is to a phone, but either it doesn't matter or I can figure it
out.


As for your answering machine, if it is rated 14 Volts and you try to run it
on 12 Volts, there is a chance that it may work properly. Just make sure
that the supply is rated high enough in wattage (current) to take the load
of the answering machine. If the design of the machine is critical that it
has to have 14 VAC going in to it and the supply is 12 VAC, the only thing
that can happen, is it may lack proper performance, or not work at all.


Thanks. I'll try to let you know when I hook it up, after I find an
adapter plug or something.

Meirman

I suspect that what you're calling dot dash dot is
really intended to be a plus sign, while the
dash line is trying to replicate a solid line for negative.

IF I should be right, then I think that you'll find
each of the lines ends with yet another symbol.

One will most likely end with a . which will indicate
the center pin.

The other will end with a ( which indicates the outer
shell. (think of it as part of the outer circle if you
will)

If you'd like a small pic of these, send me an email
from the address you want it sent to.

Take care.

Ken

 

[Mike Kennedy]

does it look like this ? ______
--------


That Means AC

- Mike


"Ken Weitzel" <kweitzel@shaw.ca> wrote in message
news:Ydjcc.30422$Pk3.22316@pd7tw1no...

meirman wrote:
In sci.electronics.repair on Mon, 5 Apr 2004 10:13:20 -0400 "Jerry G."
jerryg50@hotmail.com> posted:


If the label on the back of the modem says 6 Volts, and you connect the
12
Volt supply to it, the modem will most likely be instantly damaged. This
is
double the voltage!


Thanks for answering. I'm sorry. I was trying to indicate two
different questions in the subject line, but it's not clear at all. I
wouldn't use a 12V supply for a 6 volt item. I just can't tell if the
input to this modem is supposed to be 6 Volts AC or 6 volts DC.


The lines " - - - ", or " = = = " indicate the operation is DC, and
not


But it's not quite either of these. It's one pair of lines. The upper
line is a little longer than the top line of one = sign, and the lower
line is the same total length but has three segements, equivalent to a
dot, a dash, and a dot. I thought there was a sign something like
this that meant AC output.


AC going in to the modem. If you get a universal supply for the modem,
take
very close attention to the polarity, as well as the voltage. If you
cross
the polarity, you will also scrap the modem.


It doesn't give any indication of what the polarity should be.
(Unless it makes a difference which line of the = sign is one segment,
and which is three.)

It's a Diamond SupraExpress 56K external modem. But Diamond has been
sold last fall to Best something (not Best Buys), according to their
website, and there is limited support there now. I found the driver,
but no instruction manual.

It also doesn't say which of the two phone jacks is to the wall and
which is to a phone, but either it doesn't matter or I can figure it
out.


As for your answering machine, if it is rated 14 Volts and you try to
run it
on 12 Volts, there is a chance that it may work properly. Just make sure
that the supply is rated high enough in wattage (current) to take the
load
of the answering machine. If the design of the machine is critical that
it
has to have 14 VAC going in to it and the supply is 12 VAC, the only
thing
that can happen, is it may lack proper performance, or not work at all.


Thanks. I'll try to let you know when I hook it up, after I find an
adapter plug or something.

Meirman

I suspect that what you're calling dot dash dot is
really intended to be a plus sign, while the
dash line is trying to replicate a solid line for negative.

IF I should be right, then I think that you'll find
each of the lines ends with yet another symbol.

One will most likely end with a . which will indicate
the center pin.

The other will end with a ( which indicates the outer
shell. (think of it as part of the outer circle if you
will)

If you'd like a small pic of these, send me an email
from the address you want it sent to.

Take care.

Ken

 

[Mike Kennedy]

The polarity, if indicated is usually shown with a sign that looks sort of
like a c with a dash.. like this

C- It will usually have an indicator of the outside being - and
inside being +, but this is not always ture.

- Mike


"Mike Kennedy" <mikek400@R3MOVE.earthlink.net> wrote in message
news:gPkcc.11361$NL4.3718@newsread3.news.atl.earthlink.net...

does it look like this ? ______
--------


That Means AC

- Mike


"Ken Weitzel" <kweitzel@shaw.ca> wrote in message
news:Ydjcc.30422$Pk3.22316@pd7tw1no...


meirman wrote:
In sci.electronics.repair on Mon, 5 Apr 2004 10:13:20 -0400 "Jerry G."
jerryg50@hotmail.com> posted:


If the label on the back of the modem says 6 Volts, and you connect
the
12
Volt supply to it, the modem will most likely be instantly damaged.
This
is
double the voltage!


Thanks for answering. I'm sorry. I was trying to indicate two
different questions in the subject line, but it's not clear at all. I
wouldn't use a 12V supply for a 6 volt item. I just can't tell if the
input to this modem is supposed to be 6 Volts AC or 6 volts DC.


The lines " - - - ", or " = = = " indicate the operation is DC,
and
not


But it's not quite either of these. It's one pair of lines. The upper
line is a little longer than the top line of one = sign, and the lower
line is the same total length but has three segements, equivalent to a
dot, a dash, and a dot. I thought there was a sign something like
this that meant AC output.


AC going in to the modem. If you get a universal supply for the
modem,
take
very close attention to the polarity, as well as the voltage. If you
cross
the polarity, you will also scrap the modem.


It doesn't give any indication of what the polarity should be.
(Unless it makes a difference which line of the = sign is one segment,
and which is three.)

It's a Diamond SupraExpress 56K external modem. But Diamond has been
sold last fall to Best something (not Best Buys), according to their
website, and there is limited support there now. I found the driver,
but no instruction manual.

It also doesn't say which of the two phone jacks is to the wall and
which is to a phone, but either it doesn't matter or I can figure it
out.


As for your answering machine, if it is rated 14 Volts and you try to
run it
on 12 Volts, there is a chance that it may work properly. Just make
sure
that the supply is rated high enough in wattage (current) to take the
load
of the answering machine. If the design of the machine is critical
that
it
has to have 14 VAC going in to it and the supply is 12 VAC, the only
thing
that can happen, is it may lack proper performance, or not work at
all.


Thanks. I'll try to let you know when I hook it up, after I find an
adapter plug or something.

Meirman

I suspect that what you're calling dot dash dot is
really intended to be a plus sign, while the
dash line is trying to replicate a solid line for negative.

IF I should be right, then I think that you'll find
each of the lines ends with yet another symbol.

One will most likely end with a . which will indicate
the center pin.

The other will end with a ( which indicates the outer
shell. (think of it as part of the outer circle if you
will)

If you'd like a small pic of these, send me an email
from the address you want it sent to.

Take care.

Ken

 

[meirman]

In sci.electronics.repair on Mon, 05 Apr 2004 20:22:16 GMT Ken Weitzel
<kweitzel@shaw.ca> posted:


My gosh, Ken, you're from Canada. The internet is fantastic!

I suspect that what you're calling dot dash dot is
really intended to be a plus sign, while the
dash line is trying to replicate a solid line for negative.

If they intend a plus sign, they only got the pieces and didn't
assemble it. I'm not blind yet.

IF I should be right, then I think that you'll find
each of the lines ends with yet another symbol.

One will most likely end with a . which will indicate
the center pin.

The other will end with a ( which indicates the outer
shell. (think of it as part of the outer circle if you
will)

That's not there.

If you'd like a small pic of these, send me an email
from the address you want it sent to.

I should be sending you a pic, instead. But my other post this round
describes it pretty well.

After talking to all of you, so far I think it is AC. I will try to
get to my box of old adapters and hope I have 6 volts ac**, unless you
think I wouldn't damage it by connecting a 6 volt dc to it. (That I
have as part of a universal DC adapator.

**I should make a list and put it on the box instead of going through
them all each time. I should also buy more used spares at
hamfests, even when I don't need them.

Take care.

Thanks a lot.

Ken

Meirman

If emailing, please let me know whether
or not you are posting the same letter.

Change domain to erols.com, if necessary.

 

[meirman]

In sci.electronics.repair on Mon, 05 Apr 2004 22:10:20 GMT, you or
"Mike Kennedy" <mikek400@R3MOVE.earthlink.net> wrote:

does it look like this ? ______
--------

Close, but the bottom line should be . _ .


I should have tried harder to print it for you.

The part after 6v is only one line high, no taller than the 6, but
here I can draw it two lines high, like this:

_____
. _ .

Inaccuracies above:
The dots should be at the same height as the line between them.
The lower line and dots are a bit thinner than the top line. That
seems significant. ?

I know what you mean by the C- but there is absolutely nothing like
that. This may be why I got it so cheap. Or, maybe if it doesn't say
polarity, it is supposed to use AC. Maybe . __ . in Canada is
equivalent to -------.

It might have even been burned out already, but I'm still going to
try. This has come up before, not just with a modem, and I have to
learn how to handle it. I'll try with an ohmmeter to figure out
something.

For this and future cases of this, which do you guys think is less
likely to break it:
to connect it to 6volts AC when it should have 6volts DC, or
to connect it to 6volts DC when it should have 6volts DC?

That Means AC

I think this one must be AC. Thanks a lot, to all of you.

- Mike

"Ken Weitzel" <kweitzel@shaw.ca> wrote in message
news:Ydjcc.30422$Pk3.22316@pd7tw1no...


meirman wrote:
In sci.electronics.repair on Mon, 5 Apr 2004 10:13:20 -0400 "Jerry G."
jerryg50@hotmail.com> posted:


The lines " - - - ", or " = = = " indicate the operation is DC, and
not


But it's not quite either of these. It's one pair of lines. The upper
line is a little longer than the top line of one = sign, and the lower
line is the same total length but has three segements, equivalent to a
dot, a dash, and a dot. I thought there was a sign something like
this that meant AC output.
...
It doesn't give any indication of what the polarity should be.
(Unless it makes a difference which line of the = sign is one segment,
and which is three.)

It's a Diamond SupraExpress 56K external modem. But Diamond has been
sold last fall to Best something (not Best Buys), according to their
website, and there is limited support there now. I found the driver,
but no instruction manual.

It also doesn't say which of the two phone jacks is to the wall and
which is to a phone, but either it doesn't matter or I can figure it
out.

Meirman

If emailing, please let me know whether
or not you are posting the same letter.

Change domain to erols.com, if necessary.

 

[Franc Zabkar]

On Tue, 06 Apr 2004 03:50:21 -0400, meirman <meirman@invalid.com> put
finger to keyboard and composed:

After talking to all of you, so far I think it is AC. I will try to
get to my box of old adapters and hope I have 6 volts ac**, unless you
think I wouldn't damage it by connecting a 6 volt dc to it. (That I
have as part of a universal DC adapator.

If the power source is intended to be AC, then connecting a DC adaptor
will do no damage. It may even work, depending on the modem's design.
For example, if the modem derives the +/-12V rails from a 5V Maxim
RS232 chip, say, then a DC supply will be OK. OTOH, if an AC supply is
required to produce both +/-12V rails, then the modem may power up but
will not communicate with your serial port. You can test this by
measuring the RS232 output pins. Some should sit at +12V, others at
-12V.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.