Touch sensitive electronic switching circuit for electronic wris

Details Touch sensitive electronic switching circuit for electronic wris Touch sensitive electronic switching circuit for electronic wris

1977-12-22

1979-07-10

Anagnos, Larry N.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

58 23A, 58 50R, 307200B, 307304, 307360, 361 56, 361 58, H03K 3353, H02H 904, G04B 1900, H03K 1760

Patent

active

041609239

ABSTRACT:
In a touch sensitive electronic switching circuit including a C-MOS inverter, for use in electronic wristwatches, a resistor of 1-10 M.OMEGA. is connected to the source electrode of the P-channel MOS type field effect transistor included within the C-MOS inverter, whereby the threshold voltage level of the C-MOS inverter is shifted to a low level to enhance the reliability of the touch sensitive electronic switching circuit. In another embodiment, the resistor of 1-10 M.OMEGA. is connected to the source electrode of the N-channel MOS type field effect transistor included within the C-MOS inverter, whereby the threshold voltage level of the C-MOS inverter is shifted to a high level to enhance the reliability of the touch sensitive electronic switching circuit.

REFERENCES:
patent: 3543056 (1970-11-01), Klein
patent: 3823550 (1974-07-01), Bergey
patent: 3851189 (1974-11-01), Moyer
patent: 3871170 (1975-03-01), Bergey
patent: 3913006 (1975-10-01), Fillmore
patent: 3917964 (1975-11-01), Carlson
patent: 3942318 (1976-03-01), Fujita
patent: 3944843 (1976-03-01), Martins
patent: 3956880 (1976-05-01), O'Connor

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