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Self-oscillating

A project log for High speed solenoid driver with recovery

Playing with energy recovery to speed up solenoid action

Yann Guidon / YGDESYann Guidon / YGDES 05/05/2021 at 02:540 Comments

I had a weird idea : cross-link the gates of the MOSFETs to the output of the others.

Falstad says it should oscillate freely !

By trickling some current during the cycle, the total energy increases and the peak reaches 27V for a 24V PSU. It's like a swing, the point is to kick at the right moment to go with the move, but just enough to compensate for the losses.

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