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I think I also need to put a or 12V zener to present 12V to the 12V overvoltage sensor.
This is just a general idea of how computer power supplies work. Who manufactures it for them is the question. This item will be posted through the Global Shipping Program and includes international tracking.
International shipping and import charges paid to Pitney Bowes Inc. Find More Posts by selldoor.
Last edited by mockingbird; at It points in the direction you need to be looking. Find out more about the Top-rated seller program – opens in a new window or tab ic-store I should just be able to disconnect all but the 3. Packaging should be the same as what is found in a retail store, unless the item fwp packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag.
I want to do more than the usual mods to make this fs; bench power supply. Please enter a number less than or equal to United States Line Voltage: Originally Posted by everell Hope this helps to get you started. Add to watch list.
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All times are GMT From those and the partial reverse engineered schematic, I see that 3. Find More Posts by Duncanbest. With an old hard drive and fan acting as load, I got voltages on the rails: FSP pwm chip circuit.
So here are the voltages I got. It looks like the FSP is a proprietary chip and I can’t find a datasheet on it to see how it works. There is also a thermistor on the input fap could have failed. That CEF02N7 might be the primary side 5vsb transistor.
FSP3528 3528 DIP-20
Then you plug the cord in when you want to power up Find More Posts by retiredcaps. Page 1 of 2. It is easier to use an AC cord with a dsp than to solder an AC cord to the pc board.
Swap the diodes on the erstwhile 5V and erstwhile 12V, because the shottky diodes on the 5V line are rated for more current. The 12V should go up to 18V since it’ll be proportional. When primary switchers fail, the can pull a lot of mains current through them.
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We only accept payment through Paypal. Last edited by retiredcaps; at Originally Posted by everell Did you get your power supply working?
Originally Posted by retiredcaps Make sure the transistors aren’t shorted. Then it will up the PWM so 5V comes out of the 3.
United States I’m a: The other two transistors on the primary heatsink are E Or better, an LM adjusted to 3.