Touch-operation switch

Details Touch-operation switch Touch-operation switch

1975-01-31

1976-11-09

Heyman, John S.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307116, 307304, 317DIG2, 340258D, H01H 3500, G01D 2104, G08B 1322, H03K 3353

Patent

active

039913295

ABSTRACT:
A touch-operation semiconductor switch is constituted by employing a switching device and a semiconductor negative resistance device comprising a complemetary connection of a depletion mode n-channel junction type field-effect transistor (hereinafter: FET) and a depletion mode p-channel junction type FET, both FETs being connected by source to source to each other, and by each gate to each drain of the other FET, and a touching terminal is connected to said common connected sources, so that the on-off state of the negative resistance device is inversed when the touching terminal is touched by human body.

REFERENCES:
patent: 3452346 (1969-06-01), Kupersmit
patent: 3603811 (1971-09-01), Day et al.
patent: 3628283 (1971-12-01), Mizoule
patent: 3798462 (1974-03-01), Rizzo
patent: 3805096 (1974-04-01), Hamilton
patent: 3879618 (1975-04-01), Larson

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