Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1994-05-16
1996-10-08
Nguyen, Matthew V.
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
323273, G05F 140, G05F 144
Patent
active
055635008
ABSTRACT:
The present invention concerns a voltage regulator wherein the series pass transistor and an amplification transistor are of complementary types. Supply current flows from the DC supply source through the emitter-collector path of the series pass transistor to the load. The amount of this current is controlled by a negative feedback control signal coupled from the regulated output voltage to the base electrode of the amplification transistor, which in turn drives the base of the series pass transistor. The emitter electrode of the amplification transistor is coupled to a voltage which is less than the regulated DC output voltage so that drive requirements for the pair of transistors is reduced.
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National Semiconductor, LM104/LM204/LM304 Negative Regulator pp. 1-28 to 1-31.
Emanuel Peter M.
Nguyen Matthew V.
Thomson Consumer Electronics Inc.
Tripoli Joseph S.
Wein Frederick A.
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