Transistor rectifier
First Claim
1. A power supply, comprisinga pair of input terminals between which an AC or DC power source may be connected,a PNP transistor having electrodes respectively performing as an emitter, a collector and a base, said electrode performing as an emitter being connected to one of said input terminals,a first output capacitor connected between said collector and a point of reference potential,an NPN transistor having electrodes respectively performing as an emitter, a collector and a base, said latter electrode performing as an emitter being connected to the other of said input terminals,a second output capacitor connected between said collector of said NPN transistor and the point of reference potential, anda resistor and a capacitor connected in parallel between the base of said PNP transistor and the base of said NPN transistor.
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Accused Products
Abstract
A power supply for producing DC voltage with a minimum voltage drop from a source voltage that is either AC or DC in which the emitter-base junction of a transistor is coupled to the source so as to provide base current required to turn the transistor on, an output capacitor is connected in series with the emitter-collector path, and a capacitor and resistor are connected in parallel in the base circuit of the transistor.
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Citations
1 Claim
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1. A power supply, comprising
a pair of input terminals between which an AC or DC power source may be connected, a PNP transistor having electrodes respectively performing as an emitter, a collector and a base, said electrode performing as an emitter being connected to one of said input terminals, a first output capacitor connected between said collector and a point of reference potential, an NPN transistor having electrodes respectively performing as an emitter, a collector and a base, said latter electrode performing as an emitter being connected to the other of said input terminals, a second output capacitor connected between said collector of said NPN transistor and the point of reference potential, and a resistor and a capacitor connected in parallel between the base of said PNP transistor and the base of said NPN transistor.
Specification
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- Resources
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Current AssigneeHewlett-Packard Company (HP Inc.)
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Original AssigneeHewlett-Packard Company (HP Inc.)
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InventorsMerrick, Edwin B.
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Primary Examiner(s)BEHA JR, WILLIAM
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Application NumberUS06/621,401Time in Patent Office764 DaysField of Search363/45, 363/123, 363/125, 363/127, 323/311US Class Current363/127CPC Class CodesG01L 9/12 by making use of variations...G01R 17/06 Automatic balancing arrange...G01R 17/10 AC or DC measuring bridgesG01R 27/26 Measuring inductance or cap...
