Constant voltage generating circuit

Details Constant voltage generating circuit Constant voltage generating circuit

1994-12-16

1996-06-25

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

323315, G05F 316

Patent

active

055303404

ABSTRACT:
A clamping circuit (Q.sub.3) provides the second potential (V.sub.EE) with a clamp voltage which remains a constant value even if the second potential (V.sub.EE) varies, to obtain a clamp potential (V.sub.c). A little variation of the clamp voltage due to the variation of the second potential (V.sub.EE) is transferred to a current generating circuit (Q.sub.4) and then a feedback current (I.sub.3) is applied to a feedback circuit (Q.sub.2) in response to the variation of the clamp voltage. Since an output potential (V.sub.O) outputted from an output circuit (Q.sub.1) varies in response to the variation of the second potential (V.sub.EE), an output voltage which is a potential difference between the output potential (V.sub.O) and the second potential (V.sub.EE) remains at a constant value.

REFERENCES:
patent: 4918336 (1990-04-01), Graham et al.
patent: 5304918 (1994-04-01), Khieu
patent: 5307007 (1994-04-01), Wu et al.

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