Kapanadze Cousin - DALLY FREE ENERGY

[TinselKoala]

I see no other solution other than to pull the faililed or shorted TL494.  A job for Super Man...
   Wish me luck.

Good luck!  ( I learned some time ago always to use sockets for chips in my experimental circuits when possible....        )

This may help:

https://www.youtube.com/watch?v=rdI3xDlzxVU

[NickZ]

   
   The TL 494 has the #13 and #14 pins soldered together,  and going to the #1 pin of the duty cycle pot. No ground.

I may have to rewire it again possibly useing Stalkers TL494  circuit, which is different than Verpies posted diagram.
He has the 13, 14, as well as the 15 pins joined together. Among other changes.
  Many ways to skin a cat, just wished that one way works.

  I'll rewire as I had it previously, just see if I can get #10 pin to show an output,  again, before I try to pull out that IC.

   Thanks or the tip TK.   However I'm not close to where I can get solder wick,  nor a solder sucker.  May have to just cut it out,  from the top side, and then remove the cut off legs.   What fun!!!
  But, it maybe that the TL chip is still OK, I hope.

[verpies]

He has the 13, 14, as well as the 15 pins joined together.

If you do that, then pin 16 must be grounded.
That change does not alter the operation of the circuit I posted here.

[verpies]

That's a great start! How about going one step further and add the driver section? One suitable for both
MOSFET or IGBT.

Just like Lost-Bro wrote, but without the 74ABT04 inverter.

[stivep]

https://youtu.be/7Ldus3AQSpE


Wesley