Current detectable transistor having sense resistor with particu

Details Current detectable transistor having sense resistor with particu Current detectable transistor having sense resistor with particu

1993-04-15

1994-01-25

Wambach, Margaret R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307310, 307270, 3072992, 374172, 374183, H03K 1716, H03K 326

Patent

active

052818721

ABSTRACT:
A current detectable transistor T.sub.r comprises a main transistor in which a main current flows and a sense transistor for detecting the current flowing in the main transistor. A sense resistance R.sub.S having a temperature coefficient .alpha..sub.S suitable for maintaining the constancy of a sense voltage V.sub.S regardless of a temperature change .DELTA.T is provided at the emitter of the sense transistor. Because the sense voltage V.sub.S can be measured between the two ends of a sense resistor R.sub.S with little temperature drift, the sense voltage V.sub.S obtained as a detection result remains constant regardless of the temperature change .DELTA.T, thereby enabling a current to be detected with high precision.

REFERENCES:
patent: 5061863 (1991-10-01), Mori et al.

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