Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1975-10-28
1976-08-24
Miller, Jr., Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307229, 307254, 330 30D, H03K 112
Patent
active
039768961
ABSTRACT:
A bipolar reference voltage source comprises first and second ratio-matched transistors having respective collector load resistors and arranged to pass slightly different currents. The emitter of the first transistor is connected to two emitter resistors in series, while the emitter of the second is connected to the junction between the emitter resistors. The bases of the transistors are commoned, while their collectors are respectively connected to the two inputs of a differential amplifier. A switching arrangement has a first state in which the output of the differential amplifier is connected to the bases of the transistors, and the end of the two emitter resistors remote from the transistors is grounded, thereby producing a first reference voltage of one polarity at the output of the differential amplifier. The switching arrangement has a second state in which the output of the differential amplifier is connected to the end of the two emitter resistors remote from the transistors, the bases of the transistors are grounded and the polarity of the gain of the differential amplifier is reversed, thereby producing a second reference voltage, equal in magnitude but opposite in polarity to the first, at the output of the differential amplifier.
REFERENCES:
patent: 3890558 (1975-06-01), Guisinger et al.
Davis B. P.
McMahon Kevin
Miller, Jr. Stanley D.
Moore Stewart F.
Sherman William R.
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