29 September 2019
Another UA7812 voltage regulator from the MOSFET driver smoked:
So I decided to get rid of this approach with voltage regulator for powering the switch LED, now that LED is powered by the separate power used for cooling fans and switched on or off by the main switch. Those switches have two set of contacts so when switch is turned on it can close two separate circuits.
Another thing I did was to put high-voltage super-fast SF28G diodes on the MOSFETs but I had some problems with this, when exploring with different frequencies few times I had sudden surges of the power drained from the DC source, the source entered in auto-protection and the 12V/55W light-bulbs from ZPM's output became extremely bright and were destroyed. So far I lost 3 light-bulbs of that type, I have only one left which is still functioning:
For some reason seems ZPM doesn't like those protection diodes and at certain frequencies it suddenly starts draining full power from the DC source and smoking the 12V/55W light-bulbs.
For now I have set optimum frequency and the 12V/55W light-bulb seems to work fine but probably as soon as I will encounter one of those frequencies the same thing will happen again. If it happens probably I'll remove these protection diodes, I don't like this behavior and it's provoking damages, I don't know what's the reason but it's a fact.
|"If you want to find the secrets of the universe, think in terms of
energy, frequency and