Transistor circuit having a plurality of constant current source

Details Transistor circuit having a plurality of constant current source Transistor circuit having a plurality of constant current source

1977-03-17

1979-04-17

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307296R, 307294, 330256, H03K 1700

Patent

active

041503090

ABSTRACT:
A transistor circuit having a plurality of constant current sources wherein a compensating resistor of a predetermined value is inserted between the base of the transistor of one of the constant current sources and a reference voltage supply terminal. The compensating resistor serves to equalize the current variation between currents flowing through first and second resistive loads and thereby equalizes D.C. circuit output potentials for the circuits being driven by the constant current sources. This equalization is achieved irrespective of variations in transistor current gain due to temperature fluctuation or manufacturing error.

REFERENCES:
patent: 3182269 (1965-05-01), Smith
patent: 3970947 (1976-07-01), Sato et al.
patent: 4019071 (1977-04-01), Ahmed

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