Electrical circuitry with threshold control

Details Electrical circuitry with threshold control Electrical circuitry with threshold control

1992-04-01

1993-08-10

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307475, 307265, 3072968, H03K 19003

Patent

active

052352196

ABSTRACT:
Electrical circuitry for changing the operating voltage conditions of CMOS inverter circuitry so as to shift its threshold voltage in a direction to cause the duty cycle of the output signals to equal the duty cycle of the input signals. An average filtered DC output voltage from the inverter circuitry is used as a control signal to a variable voltage supply which changes the operating voltages, thus shifting the threshold level of the inverter circuitry.

REFERENCES:
patent: 4242604 (1980-12-01), Smith
patent: 4532439 (1985-07-01), Koike
patent: 4885475 (1989-12-01), Farina
patent: 4885479 (1989-12-01), Oritani
patent: 4922139 (1990-05-01), Giebel
patent: 5010259 (1991-04-01), Inoue et al.
patent: 5045730 (1991-09-01), Cooperman et al.
patent: 5168180 (1992-12-01), Bayer et al.

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