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Two of my bench power supplies died almost at the same time and I've finally decided to build a new big one removing the pile of supplies on the workbench.
Sooo after more than a month of work this came to life - a 4 channel 0-20V at 0-4.5A per channel. It has temperature sensors for the heatsinks and the MCU controls the speed of the fan. Each channel has digital volt/amp meter based on pic16f690.
Registered Member #1642
Joined: Sun Aug 17 2008, 11:36PM
Location: Black Canyon City
Posts: 96
You bet it's a nice power supply! Sorry, Finn, It's already been sold to me...I have agents going over to pick it up this weekend! (he, he!) Unfortunately, I kind of doubt that Huben will let it go...
Good day Sulaiman - it is fully operational (atleast for now). There is a small bug with the software of the volt/amp meters but I won't be taking it aparat to fix it (atleast for now). Good catch about the ground connector. I can't believe I forgot it. ... I had to use the handle last night
Here is the circuit of the regulator - it is from a local electronics magazine (the v-reg at the top is for the indicator boards). It has 4 identical channels. The volt/amp meters and the temperature monitor are nothing special - based on f690 and lm355.
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Linear power supply
