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Simple Emitter Follower Driver with Speed-Up Capacitor

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This is a design circuit for follower driver circuit. This circuit is give illustrated an alternate method to reverse bias the MOSFET during turn-off by inserting a capacitor in series with the pulse transformer. The capacitor also ensures that the pulse transformer will not saturate due to DC bias. This is the figure of the circuit;


This is s simplest form design circuit. The Opto-isolators may also be used to drive power MOSFETs but their long switching times make them suitable only for low frequency applications. [Circuit source: National Semiconductor Notes].

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