Phase switched power controller

Details Phase switched power controller Phase switched power controller

1989-07-12

1990-06-19

Salce, Patrick R.

Electricity: power supply or regulation systems

External or operator controlled

Phase controlled switching using electronic tube or a three...

323237, 323300, 323320, G05F 502

Patent

active

049356917

ABSTRACT:
A phase switched power controller connects a load to a alternating current source for a proportion of each half cycle selected by the user. A first full wave rectifier is connected to the voltage source and produces an unfiltered full wave rectified output signal varying between zero and a predetermined peak. A low pass filtered full wave rectified signal is preferably obtained from a second full wave rectifier, the filtered voltage and unfiltered voltage being applied as inputs to a voltage comparator, the output of which triggers a timer. The timer determines the phase delay until a further pulse is triggered for activating a triac, applying power to the load during the remainder of each half cycle.

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