do snubbers apply for solid state switches

[panfilero]

I was wondering, if I'm using FETs to switch on/off 100V at 10A. Do I need some kind of snubber circuit for my FET? Or do snubbers just apply to relays? my load is just resistive.

thanks

 

[Cydrome Leader]

Snubber design is an art. They can be used to tailor load lines to
minimize device dissipation and/or to stay inside of safe operating
limitations.

Back in the early '80's I did an off-line 200W switcher for GenRad
using HV bipolar devices (MJE-something-or-other, TO-220,
half-H-bridge).

I used a current probe and a voltage probe to get V-I load line plots,
and got switching very nearly right along the axes (*)

Ran so cool I took off the heat-sinks.

Then I wondered how "cool"?

Without thinking I grabbed a flag to see... forgetting that there was
340V P-P there... instant entertainment for the technicians ;-)

Ha!

Sounds like using your hand to discharge photoflash capacitors where the
cap is hidden somewhere.

 

[panfilero]

I was wondering, if I'm using FETs to switch on/off 100V at 10A. Do I need some kind of snubber circuit for my FET? Or do snubbers just apply to relays? my load is just resistive.



thanks

thanks for the replies!