[ale] [way OT]: Workbench power supply?

[Christopher Bergeron]

Any guesses on how long "a while" is?  I really don't want to be 
swapping car batteries out daily, weekly, or even monthly (for that 
matter).  I'd like to find a way to do this by using either an 
affordable power supply, or a "combination" of computer power supplies.

Jeff H actually gave me some good advice tonight.  Am I right in 
thinking that if I try to draw more current from a supply than it can 
handle, the power supply will be the only casualty?  I'm asking this 
because I have MANY PC power supplies that can give out 10A at 12V.  I 
can burn through power supplies without tears; however, if I lose my 
mainboard or my DC-DC supply, I may shed a few.

Any further tips Jeff, et al?
-CB




Alexander Barton wrote:

> Christopher Bergeron wrote:
>
>>  From what I can gather with my limited knowledge, I think I'd like 
>> to have a 12-14V power supply, that can handle however many AMPS are 
>> equivalent to my 70 watt DC power supply.
>
>
> 70 Watts divided by 12 Volts is 5.83 Amps.
>
>> Does anyone have a recommendation of a power supply that I could use 
>> to affordably duplicate a vehicle power subsystem?
>
>
> Instead of a power supply, you might want to get another car battery. 
> At a draw of 6 Amps, the battery should last a while.  Then, swap it 
> with the one in your car to recharge.
>
> You also have a hot spare in case you leave you car lights on one 
> day.  :-)
>
> -Alexander
>
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