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Show your favorite and most used benchtop PSU

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linux-works:

--- Quote from: peter.mitchell on April 25, 2014, 10:44:20 am ---
--- Quote from: Whales on April 25, 2014, 12:36:50 am ---long post that i want to quote but only to show i refer to you
--- End quote ---

This all applies to car PSUs for computers too;
THIS IS NOT AN ACCEPTABLE ATX PSU NOT EVEN FOR A CARPUTER!

Spend 3x the amount, get something like this, which is still sweet fuck all and get something that won't cook a few transistors every time you start your car!

--- End quote ---

I don't have any itx's in my car, but for home use, I've used those (or like it) pico-psu's and they seem fine.  what's the problem with them?

160 seems a bit much.  I've used 80 or 90's before for years at a time (at home) with no issues.  one that I got looked scary for its solder job, but it actually did function ok.

peter.mitchell:
no fusing, sweet bugger all filtering and regulation, no clamping ect. if your running a mini itx board from a large 12v plug pack, its probably fine, but dealing with automotive supply? nope. can have severe brown out during cranking, so you need boost as well as buck, and there  are a lot of high transients too. basically, the main 12v rail is connected to the input with only a fet in between and the switchers are for the 5v and 3v rails. see this being an issue?

linux-works:
ok, its about the 12v source, then.  yes, the car environ is more challenging for atx style psu outputs.

for home use, it sounds like you don't have a problem with the pico's.  they sure are convenient and fanless.  I feed mine with 3-5a of current from a 12-19v power brick and that comes from wall current.

Whales:
Those picos look interesting.  The problem is my 12V source already is an ATX power supply   ;)

You might be able to get away with hooking this directly onto a car's ~12V if it's controlled and smoothed enough (modern gadget-filled cars?), but I'm only familiar with older car designs that blow things up by habit.  Hook a scope on your car and check the input tolerance of your unit before trying it.

SeanB:
New cars are the same electrically, very noisy. Still has motors and relays, and generally the electronics attached has to survive this. Remember the alternator is still the power source, and they are still controlled with a basic pulse width modulation to produce current, the PWM being voltage control only.

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