BroMikey's Capacitor Dump Circuit

[TinselKoala]

It might be nice to see a schematic of the BroMikey circuit you are discussing. That other forum won't show you anything unless you are logged in.

[ramset]

 
I did post an invite at Energetic!

thx
Chet

[totoalas]

bro mickey latest ckt

[MarkE]

Aside from melting MOSFETs and damaging the battery plates, what is this circuit supposed to do?

[totoalas]

quote from Bro Mickey
I failed to include other info such as 80,000 uf 250vdc caps charging up to 90vdc.

Also the circuit that controls dump down voltage needed more resistance in the bases at 16K each. Just finished testing this. What happened was this is my first time using mosfet's for a dump so large and I trusted others who told me 200 ohms.

When I decided that the diagram I had was wrong my fets were toast so I started with 20k and nothing got through then 10k and 6k worked and 16k worked the best so my other pot control works with it well.

Another aspect of the dump is............ when i first hook the batteries to the dump they charge up the cap bank backwards through the fets I think, maybe this is smoking my junctions.

Again when I hook the 36vdc charge bank up to the dump with empty caps the power some how back tracks and I think to fast and this maybe damaging things.

So I thought like car audio caps maybe I better have those caps charged up first or think up some other protection. Who knows maybe I had 1 or 2 trashed fet's by then. I am in a whirlwind of study. Gotta think back and keep trying.

These are my first conclusions and will grow in the process of failures.