Precision current-source arrangement

Details Precision current-source arrangement Precision current-source arrangement

1983-12-16

1985-09-17

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

323272, G05F 316

Patent

active

045423326

ABSTRACT:
A current-distribution circuit (1) supplies a plurality of substantially equal currents (i.sub.1, i.sub.2, i.sub.3 and i.sub.4) to a permutation circuit (13), which transfers these currents to outputs (18, 19, 20 and 21) in accordance with a cyclic permutation. The currents in these outputs exhibit a ripple caused by the inequality of the currents (i.sub.1, i.sub.2, i.sub.3 and i.sub.4). A detection circuit (30) detects the ripple component of the currents (i.sub.1, i.sub.2, i.sub.3 and i.sub.4) and applies this ripple component to a associated control circuit of a block of control circuits (50). The relevant control circuit supplies a control current for correcting the relevant current (i.sub.1, i.sub.2, i.sub.3 or i.sub.4) in such way that the ripple component is substantially eliminated.

REFERENCES:
patent: 3904976 (1975-09-01), Ahmed
patent: 3982172 (1976-09-01), van de Plassche
patent: 4125803 (1978-11-01), van de Plassche
patent: 4251743 (1981-02-01), Hareyama

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