Snubber Capacitor Circuit. Capacitors used in snubber circuits are subjected to high dv dt and extremely high values of peak and rms current. An inductor placed in series with other circuit elements will control the current through those elements.
Snubbers are energy absorbing circuits used to suppress the voltage spikes caused by the circuit s inductance when a switch electrical or mechanical opens. L i 1 c i 2πf 2 f i initial ringing frequency c i intrinsic capacitance added capacitance 3 l i intrinsic inductance when the transistor switch opens the snubber capacitor looks like a short to the voltage change and only the snubber resistor is in the circuit. Added capacitance and the circuit inductance from the above equation is.
Added capacitance and the circuit inductance from the above equation is.
An inductor placed in series with other circuit elements will control the current through those elements. When the transistor switches the capacitor then tends to look like a short circuit and the resistor can shunt current out of the switch node. This type of snubber circuit consists of a series combination of resistance r and capacitance c in parallel with a scr. Additionally if the voltage generated across the device is beyond what the device is intended to tolerate it may damage or destroy it.
