Snubber circuit

[spec]

I've learn't something new today. Thank you.

Mike.

me too

spec

 

[ronsimpson]

However, it begs the question, why use a diode at all? Wouldn't a resistor that is 4 times the relay coil resistance do the job better?

With a diode you only need a 15 volt transistor. With 4X resistor you need a 60V transistor. (assuming you are driving a relay with a transistor)

 

[Pommie]

It was just a quizzical question. I guess you could dispense with diode or resistor and just use a 2,000V transistor.

Mike.

 

[crutschow]

It was just a quizzical question. I guess you could dispense with diode or resistor and just use a 2,000V transistor.

Assuming the stray capacitance is high enough so the the inductive energy doesn't push the voltage higher than that.

 

[Pommie]

I just love it when the magic smoke gets released. Makes my day.

Mike.