Electrically insulated switching element drive circuit

Details Electrically insulated switching element drive circuit Electrically insulated switching element drive circuit

2005-10-18

2005-10-18

Cunningham, Terry D. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Utilizing three or more electrode solid-state device

C327S427000

Reexamination Certificate

active

06956427

ABSTRACT:
An electrically insulated type of switching element drive circuit supplies an AC voltage via a transformer to a control electrode drive circuit that controls a switching element, with the frequency or amplitude of the AC voltage being modulated in accordance with required on/off operation of the switching element, and with the output AC voltage from the transformer being rectified to obtain a DC supply voltage that is continuously supplied to the control electrode drive circuit. The control electrode drive circuit detects a condition of the AC voltage and controls the switching element accordingly.

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patent: A 7-231250 (1995-08-01), None
patent: A 2003-244935 (2003-08-01), None

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