Voltage regulator circuit

Details Voltage regulator circuit Voltage regulator circuit

1980-02-04

1981-09-15

Shoop, William M.

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

323315, 363 86, 307 55, G05F 308

Patent

active

042900042

ABSTRACT:
A voltage regulator circuit of the type including a transistor having a base, an emitter representing a voltage output terminal and a collector representing a voltage input terminal, and a zener diode connected in series with the base to represent a common input-output terminal, wherein voltage regulation is achieved by the constant reverse bias voltage drop of the zener diode in combination with the constant forward bias voltage drop of the emitter-base junction of the transistor, the improvement including a second transistor having an emitter representing a second voltage output terminal with respect to the common input-output terminal, and the second transistor further having a base connected to the emitter of the first transistor, wherein voltage regulation is provided for the second output terminal with respect to the common input-output terminal by the combination of the voltage regulation provided at the first output terminal and the constant forward bias voltage drop of the emitter-base junction of the second transistor.

REFERENCES:
patent: 2992385 (1961-07-01), Lingle
patent: 3094654 (1963-06-01), Roelli
patent: 3214668 (1965-10-01), Brinster
patent: 3370217 (1968-02-01), Tausig

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