Interlock switching system and method

Details Interlock switching system and method Interlock switching system and method

1994-07-15

1997-06-10

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 56, 363131, H02M 3335

Patent

active

056382618

ABSTRACT:
An interlock switch (14) is provided between a housekeeping power supply (12) and a pulse width modulator (16). The pulse width modulator (16) pulses a field effect transistor (18) to generate alternating current (AC) to be passed by a transformer (26). The AC is converted to direct current (DC) by a converter 34 to provide an output voltage. If the switch (14) is opened, power to the modulator (16) and transistor (26) is terminated. No AC power is transmitted. Thus, since the transformer (26) only transfers AC, no voltage is generated at the output of the system.

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