Fade-in and fade-out switching circuit

Details Fade-in and fade-out switching circuit Fade-in and fade-out switching circuit

1974-09-05

1977-02-22

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307304, 330 35, 357 22, H03K 1760

Patent

active

040094014

ABSTRACT:
A switching circuit using first and second semiconductor devices each having a semiconductive substrate with a current path portion, first and second semiconductive regions forming a PN junction therebetween, the first region being capacitively coupled to the current path portion, a control electrode connected to the second region, a signal input terminal electrically connected to the first terminal of the first semiconductor device, an output terminal electrically connected to the second terminal of the first semiconductor device, means for connecting the control electrode of the first semiconductor device to the first terminal of the second semiconductor device, means for applying a bias voltage to the second terminal of the second semiconductor device, and switch means for selectively applying a bias voltage to the control electrode of said second semiconductor device. The switching circuit is operated with a signal applied to the control electrode of the second semiconductor device.

REFERENCES:
patent: 3560726 (1971-02-01), Platt et al.
patent: 3621304 (1971-11-01), Houpt
patent: 3654394 (1972-04-01), Gordon
patent: 3662113 (1972-05-01), Recklinghausen
patent: 3740581 (1973-06-01), Pfiffner
patent: 3757139 (1973-09-01), Hunter
patent: 3868718 (1975-02-01), Arai
Heiering, "Feldeffekttransistoren als Koppelpunkte in der Fernsprechtechnik;" Heft 10, 1970, NTZ (German), pp. 522-526.

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