Reference voltage source, in particular for amplifier circuits

Amplifiers – With semiconductor amplifying device – Including particular biasing arrangement

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330257, 330261, 330288, 330289, 323315, H03F 304, H03F 345

Patent

active

042740614

ABSTRACT:
A reference voltage source, in particular for amplifier circuits, includes a pair of transistors having their bases connected together, one of the transistors being further connected as a diode and the other being operated normally. In the collector circuit of the transistors, a current mirror circuit is connected which includes a further transistor which is connected in series through an additional transistor to a reference potential. The base of the additional transistor is connected with emitter resistors in the emitter circuit of the first-mentioned transistors and the reference voltage is taken off at the connection between the serially connected further and additional transistors. Additional current mirror circuits may be employed for providing a symmetrical operation of the amplifier circuit supplied by the reference voltage source.

REFERENCES:
patent: 3668320 (1972-06-01), Duck
Regelungstechnik, No. 1, 1969, p. 13.
Siemens Dajenbuch 1974/1975, vol. 2, Linear Circuits, pp. 213, 214, 216.
Van Kessel et al., Philips Technische Rundschan 1971/1972, No. 1, pp. 4-8.

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