computer power supply battery charger

From: ilaboo (plener_at_earthlink.net)
Date: 08/16/04 

Date: Mon, 16 Aug 2004 13:53:21 GMT

googling has provided some info but still confused maybe someone can help

i want to use a computer battery supply as a battery charger--lead acid
nicad, etc

it puts out 12v dc and 5 volts dc

advice talks about putting a load resister from 12v to ground to turn on
power supply ( power supply is a switching type0

confused at this point as there is 12 v available when i test it--i am
assuming at this point the power supply is on--a load across a 5 ohm
power resister in series gives 3 volts
using ohms law i get .600 amps--am i right so far?

power supply specs say i can get 10 amps at 212 v

what do i have to do to get this?
any help really is appreciated

i have no info such as schematic on this power supply

tia
pter

Relevant Pages

  • Re: LEAD ACID BATTERY
    ... My circuit draw is 700mA and requires plus minus 18 volts to ... I need batteries that can atleast run for 10 to 12 ... Can anybody advice me that am I doing the right thing that will these ... Have you considered one 12V battery, and a DC-DC converter to generate ...
    (sci.electronics.design)
  • Re: Is this practical?
    ... very large voltage. ... you use ohms law because essentially you just have a huge wire and when ... I suggest you learn some basic electricity. ... Conceivably something like 5 volts and 200 amps might be required. ...
    (sci.electronics.basics)
  • Re: Newbie: Series/Parallel DC circuit current question
    ... enters the junction, splits 3 equal ways so we have .666 amps across ... If 90 volts is being applied at ... If I can't use Ohms law there, ...
    (sci.electronics.basics)
  • Re: 0.1 Volts output voltage regulator
    ... I am looking for a +/- 0.1 volts output voltage regulator. ... +/- 5 volts input. ... Any advice! ...
    (sci.electronics.design)
  • Re: 0.1 Volts output voltage regulator
    ... I am looking for a +/- 0.1 volts output voltage regulator. ... +/- 5 volts input. ... Any advice! ...
    (sci.electronics.design)