Snubber Circuits
Snubber Circuits
Snubber Circuits
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A MORE PRACTICAL TURN-OFF SNUBBER<br />
A capacitor by itself is not a sufficient turn -off snubber because, when<br />
the transistor is turned on again, C s will discharge through Q.The<br />
resulting transistor current can be very large and lead to failure. To<br />
avoid this problem, we add resistor and a diode to C s , as shown above.<br />
The purpose of the resistance R s is to limit the discharge current when<br />
the transistor turned on, and the purpose of the diode D s is to allow<br />
the charging current to bypass the resistor during the turn -off<br />
transition.
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