Patent
Power supply and control circuit for series connected controller
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TLDR
In this article, a control circuit for a power threshold switch, like a power triac, to be connected in series with a load device, at a situs where only one AC power conductor and a conductor extending to the load device is available, is energized from a DC power supply energizing from these conductors.Abstract:
A control circuit for a power threshold switch, like a power triac, to be connected in series with a load device, at a situs where only one AC power conductor and a conductor extending to the load device is available, is energized from a DC power supply energized from these conductors. The power supply includes a rectifier connected in series with an energy storage means, such as a capacitor, the terminals of which constitute the DC output terminal of the DC power supply, an impedance of much greater resistance than that of the load device and through which the capacitor is charged when the triac is in its non-conductive mode, and preferably a low power control triac shunting the high impedance and triggered momentarily into conduction each half cycle as the applied AC voltage goes through zero when the power triac is to be in its conductive mode, to effect charging of said energy storage means and subsequently the triggering of said power threshold switch into conduction.read more
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Circuitry for load connection and disconnection
TL;DR: In this article, the authors propose a circuit for the connection of a load to and disconnection of a loaded load from an AC power source. But this circuitry is specifically useful in the on/off control of such as incandescent lamps, but not exclusively so, and provides for the timed disconnection when the load is connected in series with the circuitry and AC power sources, or alternately provides for a timed reduction of power delivered to the load.