Supply voltage circuit with controllable output power

Details Supply voltage circuit with controllable output power Supply voltage circuit with controllable output power

H - Electricity

02

M

H02M 5/257 (2006.01) G01R 19/175 (2006.01) H05B 41/392 (2006.01)

Patent

CA 2064009

2064009 9013940 PCTABS00002 A supply voltage circuit having an input for connecting an input alternating voltage and an output for tapping off an output power of predetermined value. Said circuit comprises a zero crossing detector connected to the input and which delivers zero crossing pulses at the zero crossings of the input alternating voltage. The zero crossing pulses control a timing circuit, which after a time period following the zero crossing pulses and corresponding to the predetermined value of the output power, supplies control pulses to the control circuit of a triac circuit interconnected between the input and the output of the supply voltage circuit. A set and reset circuit is connected between the zero crossing detector and the timing circuit for resetting and setting the timing circuit prior to the zero crossings of the input alternating voltage.

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