Regulator circuit

Details Regulator circuit Regulator circuit

1983-04-18

1985-10-22

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

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

323224, 323280, G05F 158

Patent

active

045491291

ABSTRACT:
The described invention relates to a regulator circuit.
A transistor Q1 receives at an input terminal 1 an input voltage having D.C. and A.C. components and provides a regulated D.C. output voltage at an output terminal 4. The transistor Q1 lies in the negative feedback path of an operational amplifier 6 between an output 9 and an input 5 of that amplifier. The amplifier 6 also has a reference voltage input 8. A second operational amplifier 19 also receives the reference voltage at one input 20 and at its other input 18 receives a D.C. potential representative of the D.C. input component and has an output terminal 21 coupled to the output terminal 4 in such a manner as to regulate the value of the D.C. input component by control of current drawn through the transistor Q1. A third operational amplifier 32 also receives the reference voltage at one input 33 and at a second input 31 receives the A.C. component of the input voltage and passes the A.C. component to the output terminal through the first operational amplifier 6 and the transistor Q1.
The regulator circuit is particularly applicable to a telephone speech circuit and is compatible with integrated circuit technology.

REFERENCES:
patent: 4038594 (1977-07-01), Quinn et al.

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