"Stormin Mormon" wrote in message
...
In the days of old, I used to use a mobile CB, which
sat on a (designed for it) power supply. The CB was
12 volts DC, and the power supply rectified the house
power, to provide DC for the two way radio. And the
antenna was on the roof.

An old computer power supply with 12 volt output.
Wonder if that would drive a CB mobile, or a CB
walkie? Makes me wonder if I could wire a lighter
socket to an old computer power supply and have a
couple amps of 12 volt DC?

Anyone know how much 12 volt DC a power supply
provides? On a survival note, maybe a 12 volt tap off
computer power supply could charge up a car battery,
or be emergency communications.


You had just received several replies that don't know what they are talking
about.

The older computer supplies that were for the AT type computers work just
fine for some 12 volt uses. Usually you need to put a small load on the 5
volt output. I sometimes just use an old hard drive. YOu have to look on
the supply to see how much current you can draw out of the 12 volt side.
All wires of the same voltage and poliarity hook together inside the supply.


For the ATX supply:
Hook up a load to the 5 volt line. Old hard drive again.

Jumper pin 14
(PS-ON) to pin 13 (ground, black wire.) At this point, fan in PS should
start spinning, drives should spin, and + 5/12v, -5/12v, +3.3v, and
+5vsb should be present at 20 pin connector.

Disconnecting pin 14-13 jumper should turn supply back off.

The supplies will put out from 5 to about 10 amps or more depending on the
supply on the 12 volt wires, 20 or 30 amps on the 5 volt wires and not much
on the minus voltage wires, look at the side and see if they list the
current.

YOu may be able to open up the case and turn up the voltage some. Many
mobile radios usually operate best around 13.8 volts as this is the nominal
voltage of a running car. Also as they are switching supplies the may put
out a signal on the frequency you are trying to receive.
Short answer is you probably can run the CB on the supply, and yes if you do
turn up the voltage. I use one to test some 2 meter ham radios when I don't
want to hook them up to my regular DC supply. I did turn the voltage up
some with the internal adjustment.
Don't recall, but think that voltage pot is for all the voltages.

YOu probably can not charge a 12 volt battery as you must have some more
voltage than 12.6 volts to charge the battery.