This power supply comes courtesy of Brian Bell, former owner of Chipamp.com. After relinquishing control of this small company to another individual, the company appeared to go downhill, but after its demise, Brian generously released the designs he created, including this power supply, into the public domain. If board dimensions are kept below 100mm X 100mm, the cost of manufacture and postage is negligible, coming in at less than £6
6 thoughts on “Chipamp power supply”
Hey, thanks for the great blog. How do I find out the ac voltage range this is capable of rectifying? Thanks!!
Hi, forgive me if I’m completely wide of the mark with your question, but if you mean 120/240V, it’s fine for either.
ah i should have been clearer, I meant what range of voltage from the transformer secondaries
Apologies, but no idea. Perhaps have a look at Rod Elliott’s article on PSU design if you have a specific use in mind.
Where can I find a BOM for this?
There’s no BOM for this on my site. The schematic in the post details the values of the various parts, you just need to make sure you specify the correct values in terms of expected voltage for the capacitors (voltage rating of the caps should comfortably exceed the circuit voltage) and things like lead spacing. It’s a good opportunity to do some research and try to understand the circuit, there are a lot of websites that have this information and some of those are available in the links section of this website. Get the board fabricated, do some reading and measure the spacing of the components. I highly recommend this website, it helped me a lot.
Remember though (and I’m not trying to be condescending), you will be messing around with mains voltage – if you’re not 100% sure of what are you doing, then stop. Ask on the forums, read some more or use a prebuilt supply.