CPD mod - capacitor potentiometer diode modification

[BobZilla]

Super glad you posted these back up Patrick. These exact two videos were a huge inspiration for my tinkering with SS,,,Thanks

[min2oly]

Here is part 2:

[min2oly]

Alright - so here's a vid on taking the SSG wheel and turning it sold state. For those who have not done it yet. it's very simple, you just take the bottom trigger lead, remove it from the primary negative/emitter and place it on the primary positive.

Warning!
before you do this, you MUST increase the resistance to the base of the transistor.

start w/ a 20k pot, make sure you have an additional fixed resistor inline to the base. This will help if the POT burns or you accidently lower the resistance too much.

Hope this helps - Kind Regards,
Patrick A.

[min2oly]

John K,
I get it now, voc is rated higher than the 24V. So on your solar setup, it's my sense that your cap is too big for even the cpd mod to help.
If your cap takes too long to charge to 40v then you'll need something else in addition, to fend off the oscillations from happening at lower voltages. This is the balancing act between the primary cap vs the trigger cap - the diode plays a very important role here as well.

I have used a zener on the base with the vanilla SS SSG as well as the resistor voltage divider method to keep the primary cap high prior to oscillations. the CPD mod doesn't like the zener much, but this might help w/ the setup you have as is... Hope all goes well.
Kind Regards,
Patrick A.

[min2oly]

Thought I may as well get it started: