Apparatus for the controlled supply of current to an electrical

Details Apparatus for the controlled supply of current to an electrical Apparatus for the controlled supply of current to an electrical

1998-05-05

1999-02-09

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

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

200 16R, 200551, G05F 1455, H01H 342

Patent

active

058699546

ABSTRACT:
An apparatus for a controlled supply of current to an electric consumer, including a turn-on function. The apparatus including a circuit board having conductor paths, a subordinated phase control circuit mounted on the circuit board and having a triac switching in both directions of an AC supply voltage and a trigger circuit for triggering the triac, the triac being connected in series with the consumer, a contact point mounted to the board, and a springing metal tongue having a first end mounted to the board and a second end that extends above the contact point at a distance from the board. The metal tongue and the contact point form electric contacts with the conductor paths on the board so as to define a switch. The electric contacts lead to connection points in the trigger circuit of the triac. The triac is operative to control current flow through a load of the consumer so that contact established by a movement of the metal tongue supplies the load with high currents in dependence on a setting via the triac, which is now switched through, while simultaneously there is very low current flow via the switch formed by the metal tongue and the contact point that lies in the triac trigger circuit.

REFERENCES:
patent: 5030890 (1991-07-01), Johnson
patent: 5324903 (1994-06-01), Moulton
patent: 5373224 (1994-12-01), Rabier et al.
patent: 5410240 (1995-04-01), Runggaldier et al.

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