Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1989-08-07
1990-12-18
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307270, 323316, H03K 301, H03K 326
Patent
active
049788680
ABSTRACT:
The accuracy of a bandgap reference voltage generator that contains two n-p-n transistors, an operational amplifier and five resistors, is increased by the use of current compensation circuitry which includes a third n-p-n transistor with an emitter resistor and a current mirror circuit. A master leg of the current mirror circuit generates a first output current which is identical to base current needed by the two transistors of the bandgap voltage generator. A slave leg of the current mirror circuit generates a second output current which is identical to the first output current and which is coupled to bases of the two transistors of the bandgap reference voltage generator. Thus base current needed by the two transistors is supplied by the compensation circuitry. This improves the accuracy of the output voltage generated by the reference voltage bandgap generator.
REFERENCES:
patent: 4263519 (1981-04-01), Schade, Jr.
patent: 4446419 (1984-05-01), van de Plassche et al.
patent: 4506208 (1985-03-01), Nagano
patent: 4924113 (1990-05-01), Schade, Jr.
Giordano Raymond L.
Vulih Salomon
Harris Corporation
Miller Stanley D.
Roseen Richard
Schanzer Henry I.
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