Reference current source circuit

Details Reference current source circuit Reference current source circuit

1980-07-15

1981-12-29

Shoop, William M.

Electricity: power supply or regulation systems

Self-regulating

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

G05F 320

Patent

active

043084966

ABSTRACT:
A reference current source circuit comprises a current sink including a pair of transistors having different emitter areas and an emitter resistor connected to the emitter of one of the transistors having greater emitter area, and producing sink currents of the same magnitude which is dependent on the emitter area ratio and the resistance value of the emitter resistor and independent of a supply voltage. In order to supply the current sink with the sink currents, there are used two constant current sources to produce constant source currents of the same magnitude greater than that of the sink currents and a current mirror connected to these constant current sources. The current mirror absorbs surplus currents of a magnitude equal to the difference between the magnitudes of the source current and sink current.

REFERENCES:
patent: 4234841 (1980-11-01), Schade, Jr.
"Integrated Linear Basic Circuits", Th. J. van Kessel & R. J. van de Plassche, Philip Technical Review, vol. 32, No. 1, pp. 1-12, 1971.
"An Accurate Integrated Voltage-To-Current Converter", A. T. van Zanten & J. H. Huijsing, IEEE Journal of Solid State Circuits, vol. SC-10, No. 6, pp. 432-436, 1975.

Affiliated with

Also associated with

Rating

Reference current source circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reference current source circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reference current source circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1020139