look at the type of overshoot and ringing which occurs after a switching event.
There are several possible methods which can be employed to remove the overshoot
and ringing. The first experiment uses a small snubber to remove the ringing portion
of the transient. Fig 1 shows how the snubber is connected to the coilgun circuit.
1. RC snubber connected across the switching device.
snubber works simply by providing a low impedance path to ground for high frequency
voltages. The only parameter which is measured in this experiment is the D-S voltage
of the mosfet.
different snubbers were used - one composed of a 100
resistor and a 0.2uF capacitor, the other formed from a 25
resistor and a 0.3uF capacitor. The resistors were plain carbon types and the
capacitors were polycarbonate.