Quote:
Originally Posted by trsomian
I don't know what you are trying to achieve, but that circuit looks less than ideal for most things I can think of. Surely that resistor across the gates tends to produce shoot through current.
|
Agree - it looks like an "Aaargh!" circuit, with lots of opportunity for Q8 and Q9 to turn on at the same time.
Quote:
Originally Posted by Diabolical Artificer
Bit out of my league here, but I though it as usual practice to put 100r on the gates of mosfets as protection.
|
Not essential, but I regard it as good practice (or 10 ohm if you are switching fast). Otherwise you can get parasitic oscillations at VHF.
It also helps prevent fault propagation. If you kill the FETs such that the gate goes internally short-circuit to everything, the gate resistor can blow open and isolate the upstream circuitry, which stands a better chance of surviving.