Transcription of Snubber Circuits: Theory , Design and Application
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Snubber Circuits: Theory , Design and Application
May 93 Snubber Circuits: Theory , Design and ApplicationPhilip C. ToddPassive Snubber TypesThe basic function of a Snubber is to absorbenergy from the reactances in the power fIrst classification of Snubber circuits is wheth-er they absorb energy in controlling a voltage or acurrent. A capacitor placed in parallel with othercircuit elements will control the voltage acrossthose elements. An inductor placed in series withother circuit elements will control the currentthrough those elements. Figure I shows this con-cept. A voltage Snubber (Fig. la) has energy stor-age capacitors in it and a current Snubber (Fig. Ib)has inductors for energy storage. The networksassociated with the inductor and capacitor shown inFigure I determine how energy is passed to thestorage element and how the energy is removedfrom itAll of the otherclassifications of snub-berg relate to the waysin which the energy istransferred to and fromthe Snubber .
the parasitic resonances in the power stage and is probably the most widely used of all snubber circuits. It is used on output inductors and the secondaries of transformers as well as across diodes and switches. It is applicable both to rate of rise control and to …
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