Variable voltage to current conversion circuit

Details Variable voltage to current conversion circuit Variable voltage to current conversion circuit

1993-09-21

1995-10-31

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

327538, G05F 316

Patent

active

054633095

ABSTRACT:
A variable voltage to current conversion circuit having a first transistor and a second transistor having bases which are supplied with differentially related voltage, a diode-fashion third transistor having a base and a collector commonly connected to the emitter of the first transistor through a first resistor, a diode-fashion fourth transistor having a base and a collector commonly connected to the emitter of the second transistor through a second resistor, a first current source coupled to a connection node of the emitters of the third and the fourth transistors, a fifth and a sixth transistors having bases connected to the collectors of the third and the fourth transistors, respectively, and emitters commonly connected to a second current source, and a third current source coupled to the connection node of the collectors of the second and the sixth transistors.

REFERENCES:
patent: 3533007 (1970-10-01), Segar
patent: 4004247 (1977-01-01), Van De Plassche
patent: 4442400 (1984-04-01), Nagano
patent: 4647839 (1987-03-01), Siligoni et al.
patent: 4682098 (1987-07-01), Seevinck et al.
patent: 4689580 (1987-08-01), Fukuda et al.
patent: 4961046 (1990-10-01), De Jager
patent: 5223743 (1993-06-01), Nakagawara
Fukuda et al, "New Video Singal Processing LSIs for 8MM VCRs", IEEE Transactions on Consumer Electronics, vol. 34, No. 3, Aug. 1988, New York, pp. 543-550.

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