Current supply circuit

Details Current supply circuit Current supply circuit

1982-01-26

1984-08-14

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

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

179 70, G05F 146

Patent

active

044659679

ABSTRACT:
A current supply circuit comprises a DC power feed circuit exhibiting a constant current characteristic for a power source and a constant resistance characteristic for a load, a first detecting circuit for detecting a load current or a load voltage, a DC-DC converter circuit inserted between the power source and the DC power feed circuit, a second detecting circuit for detecting an output voltage from the DC-DC converter circuit; and an operation circuit coupled at the input with the output of the first detecting circuit and the output of the second detecting circuit for controlling the DC-DC converter circuit by the output thereof. The DC-DC converter circuit is so controlled as to produce a voltage representative of the sum of a voltage drop across the load and a fixed voltage necessary for the operation of the DC power feed circuit.

REFERENCES:
patent: 4203009 (1980-05-01), Tattersall
patent: 4278930 (1981-07-01), Rogers
patent: 4315106 (1982-02-01), Chea, Jr.
patent: 4315207 (1982-02-01), Apfel

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