!!!DANGER!!!
The circuit described bellow is dangerous. Using it improperly will kill you. On the other side I may also made mistakes during the design and built. I'll take absolutely no responsibility for it. If you want to build it, please don't ask for circuit board or help. I won't help you.
As the other PCBs are arrived for the supply, I continued the build.
Finished the separated isolated supplies for the panel meters (these are nothing else just a simple dual 7809 based linear supplies):
Also added the power distributor and some wiring for the backpanel:
Connected the panel meters and, milled parts of the front panel (manually as my CNC mill is still broken)
How the whole thing looks like today:
How the whole thing looks like today:
And its working, partially:
As you see the decimal dot is on the bad place (it is more likely 330V than 33V)
In addition I took a picture of the board on thermal camera. You can clearly see that the two capacitor draining resistors getting warm:
In addition I took a picture of the board on thermal camera. You can clearly see that the two capacitor draining resistors getting warm:
So I can tell, it is progressing, but quite few things still ahead of me:
- Mill a hole for the mains socket and the circuit breaker to the backpanel
- Mill the holes for the banana jacks to the front panel
- Finish the wiring
- Set the correct decimal dots
- build a dummy load to be able to test the current measurement
- Calibrate
- Paint the front panel
- Build the phase switching electronics (not mandatory, maybe after finish)
- Create the console for the caps
continue...
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