Programmed control module for inductive coupling to a wall switch

Circuitry for controlling the conduction angle of AC current to a selected load comprising:

• a. a Triac having output electrodes connectable in series with the load and between a pair of AC supply voltage terminals,
• b. a microprocessor coupled to a gate electrode of said Triac for controlling the conduction time thereof, and
• c. means coupling data control signals to said microprocessor for downloading data therein which is subsequently used to control the conduction time of said Triac,
• d. said coupling means includes transformer primary and secondary windings electrically coupled to said gate electrode of said Triac, and
• e. said primary winding of said coupling means is located around a hollow bobbin within a control module and said secondary winding of said coupling means is located within an on/off switch knob of a wall switch and adapted to fit within a opening of said bobbin.

Circuitry for controlling the conduction angle of AC current to a selected load comprising:

• a. a Triac having output electrodes connectable in series with the load and between a pair of AC supply voltage terminals, and
• b. a transformer winding coupled to a gate or control electrode of said Triac and responsive to inductively coupled control signals applied thereto for controlling the conduction angle of said Triac,
• c. a programming module inductively coupled to said transformer, and
• d. said transformer winding is adapted for mounting within an on-off knob of a conventional wall switch and may take the form of a small RF choke coil.