Logarithmic current measurement circuit with improved accuracy a

Details Logarithmic current measurement circuit with improved accuracy a Logarithmic current measurement circuit with improved accuracy a

1993-05-06

1994-07-05

Sikes, William L.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307492, 307310, 307 1, 328145, G06G 724

Patent

active

053270290

ABSTRACT:
A logarithmic current measurement circuit for operating upon an input electric signal utilizes a quad, dielectrically isolated, well-matched, monolithic bipolar transistor array. One group of circuit components within the circuit cooperate with two transistors of the array to convert the input signal logarithmically to provide a first output signal which is temperature-dependant, and another group of circuit components cooperate with the other two transistors of the array to provide a second output signal which is temperature-dependant. A divider ratios the first and second output signals to provide a resultant output signal which is independent of temperature. The method of the invention includes the operating steps performed by the measurement circuit.

REFERENCES:
patent: 3728636 (1973-04-01), Hill
patent: 3967105 (1976-06-01), Harrington
patent: 4004141 (1977-01-01), Curtis
patent: 4475103 (1984-10-01), Brokaw et al.
patent: 4604532 (1986-08-01), Gilbert
patent: 5057717 (1991-10-01), Kimura
patent: 5081378 (1992-01-01), Watanabe
"Proceedings of the Second ARM Science Team Meeting", dated Oct. 26-30, 1991.
"Log Converters" (undated), National Semiconductor Application Note 30.
"Theory and Applications of Logarithmic Amplifiers" (undated), National Semiconductor Application Note 311.
"Miniaturized logarithmic count-rate circuit", Rev. Sci. Instrum. vol. 4, No. 11, Nov. 1973.

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