High impedance current source

Details High impedance current source High impedance current source

1991-12-24

1993-07-06

Beha, Jr., William H.

Electricity: power supply or regulation systems

Output level responsive

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

323273, G05F 1575

Patent

active

052257665

ABSTRACT:
A high impedance current source includes a voltage to current transducer having positive and negative inputs with an output current passed through a monitor resistor. Matched resistances are connected from both sides of the monitor resistor back to the positive and negative inputs to the transducer. Matched resistances are also connected between the positive and negative inputs and a common base, and the control voltage is applied across the inputs through matched resistances. The circuit is preferably utilized to provide current to a circuit utilized in differential calorimetry.

REFERENCES:
patent: 3263484 (1966-08-01), Watson et al.
patent: 3527923 (1970-09-01), O'Neill
patent: 4463594 (1984-08-01), Raff et al.
patent: 4544875 (1985-10-01), Park et al.
patent: 4618814 (1986-10-01), Kato et al.
Gregorcic, "Transistorized DC Voltage Regulator as a Common Source of Reference Voltage", Elek, Vestnick (Poland), vol. 43, No. 1, pp. 40-45, Jan./Feb. 76.

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