Constant voltage generating circuit

Details Constant voltage generating circuit Constant voltage generating circuit

1975-12-19

1977-02-08

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

323 39, 354 51, 354 60R, G05F 146

Patent

active

040074153

ABSTRACT:
A constant voltage generating circuit comprises a pair of first and second input terminals to which power source voltage is applied over the two terminals, an operational amplifier having output terminals supplying the constant output of the constant voltage generating circuit and two input terminals, a first resistor connected between the first input and one input of the amplifier, a second resistor connected between the first input terminal and the other input terminal of the amplifier, and a pair of logarithmic conversion diodes generating voltage which is logarithmically proportional to current flowing in itself. The circuit has an excellent stable output and a simple construction as well as has little wasted current and produces a constant voltage proportional to absolute temperature.

REFERENCES:
patent: 3851241 (1974-11-01), Wheatley
patent: 3959717 (1976-05-01), Pitel

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