Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1983-09-29
1986-05-06
Salce, Patrick R.
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
323907, G05F 158, G05F 144
Patent
active
045874760
ABSTRACT:
A resistor (R3) reduces voltage between an input voltage and the emitter terminal of a series pass transistor pair (Q1, Q2). An operational amplifier (U1) compares this reduced voltage with a reference voltage that is less than, but varies with, the input voltage. The emitter voltage decreases until the current reaches a design limit. Then, a resistor senses the output voltage and pulls the operational amplifier's input voltage down. This action causes the base current of the transistor pair (Q1, Q2) to decrease and the output current to foldback.
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Barnard Delbert J.
Kaser Bruce A.
Rebsch D. L.
Salce Patrick R.
The Boeing Company
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