Temperature compensated current sensing circuit

Details Temperature compensated current sensing circuit Temperature compensated current sensing circuit

1983-12-19

1986-05-27

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307310, 307494, 307350, 307270, 328 3, 330289, G06G 710, G06G 712

Patent

active

045917434

ABSTRACT:
A metal resistor having a positive temperature coefficient of resistance is connected to a current source to develop a voltage drop that acts as an offset for a .DELTA.V.sub.BE differential amplifier. Since this offset voltage has a positive temperature coefficient it will compensate the resistor coefficient to develop a constant current. The constant current can be employed in a current sink sense-shutoff combination or it can be used to develop a plural output current source/sink combination.

REFERENCES:
patent: 4122403 (1978-10-01), Cave
patent: 4210827 (1980-07-01), Kanazawa et al.
patent: 4352053 (1982-09-01), Oguchi et al.
"Temperature Control for Sensitive Electronic Components", by B. J. Milander, vol. 19, No. 2, Jul. 1976.

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