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Optically controlled high-speed switching of a power transistor

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3 Author(s)
Lazarus, M.J. ; Dept. of Phys., Lancaster Univ., UK ; Loungis, K. ; Allen, V.H.W.

Pulsed phototransistor switches using profiled optical drive have been extended to control power transistors. The principle has been tested using the criterion of switching several hundreds of watts. With low-cost LEDs and phototransistors for the optical isolation, power output switch times well below 1 Ms have been demonstrated

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Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on  (Volume:47 ,  Issue: 4 )