Touch switch device

Details Touch switch device Touch switch device

1980-12-08

1982-09-28

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

307116, 328 5, H01H 3600

Patent

active

043521410

ABSTRACT:
A touch switch device includes a touch plate 3 or other touch member arranged, when touched, to interrupt the passage of an oscillating signal from a DC powered oscillator 31-34 to a charging circuit 36-39, including a capacitative store 38. The charging circuit responds to this interruption to initiate discharge of the charge store, and a control, including an inverter 44 and a flip-flop 46 controls a switch 48 to change from one state to another upon a change of charge state, in this case a recharge, of the charge store. A circuit 51-54 supplies a reset signal to the flip-flop during an initial preset period immediately following the switching on of power to the device, to inhibit this change of state of the switch 48 during such period.

REFERENCES:
patent: 3111608 (1963-11-01), Boenning et al.
patent: 4159473 (1979-06-01), Senk
patent: 4287513 (1981-09-01), Lam et al.

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