Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1983-09-09
1986-05-13
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307254, 307318, 307491, 307495, H03G 1102
Patent
active
045889023
ABSTRACT:
The present invention provides an analog switching circuit including an input transistor, a base of which receives an input signal. A switching transistor has its emitter connected in common with the emitter of the input transistor and a constant current source is connected between the common emitter and ground. A control transistor effects ON and OFF control of the switching transistor in accordance with a control signal, and an output transistor extracts an output signal from the common emitter of the input transistor and switching transistor. An input clamping circuit composed of two or more Zener diodes connected in series with each other and in the reverse direction with respect to each other, is connected between the base of the switching transistor and the base bias point of the input transistor so that the base voltage of the switching transistor is increased, thereby avoiding reverse bias of the input transistor upon receiving a large amplitude input signal.
REFERENCES:
patent: 3584920 (1971-06-01), Sills
patent: 3965374 (1976-06-01), Peterson et al.
patent: 4138612 (1979-02-01), Schlesinger
patent: 4236088 (1980-11-01), Horiuchi et al.
patent: 4256980 (1981-03-01), Asada et al.
patent: 4367419 (1983-01-01), Yazawa et al.
Hart, "Inverter Circuit with Hall Effect Device", IBM Tech. Disc. Bull., vol. 16, No. 9, Feb. 1974, p. 2985.
Campbell, "Analog Switch Employing Common Mode Rejection", RCA Technical Notes, RCA Tn No. 734, Jan. 1968, pp. 1-2.
Hudspeth D. R.
Miller Stanley D.
Mitsubishi Denki & Kabushiki Kaisha
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