Current dividers using emitter-coupled transistor pairs

Details Current dividers using emitter-coupled transistor pairs Current dividers using emitter-coupled transistor pairs

1980-03-10

1981-08-18

Shoop, William M.

Electricity: power supply or regulation systems

Self-regulating

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

307297, G05F 320

Patent

active

042849454

ABSTRACT:
A current divider apportions current applied to the interconnected emitters of a pair of current-dividing transistors as their respective emitter currents in a ratio dependent upon the voltage applied between their bases. A first diode means and a resistor are connected in a series connection, which series connection is in parallel connection with a second diode means. Current is applied to this parallel connection in a poling to forward-bias the first and second diode means which exhibit a difference in offset potentials across said resistor. A voltage directly related to this difference is applied between the bases of the pair of current-dividing transistors to determine the ratio of their emitter currents.

REFERENCES:
patent: 3766543 (1973-10-01), Te Winkel et al.
patent: 3867685 (1973-02-01), Ahmed
patent: 3921091 (1975-11-01), Van Kessel et al.
patent: 3943431 (1976-03-01), Hareyama
patent: 4021722 (1977-05-01), Crowle
patent: 4025842 (1977-05-01), Crowle
patent: 4045694 (1977-08-01), Ahmed
patent: 4051428 (1977-09-01), Imai
"A precision Active Current-Splitting Circuit Technique," R. W. J. Barker & B. L. Hart, IEEE Journal of Solid State Circuits, Jun. 1976, pp. 406-408.

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