Transistor provided with a current detecting function

Details Transistor provided with a current detecting function Transistor provided with a current detecting function

1990-05-14

1991-10-29

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

3072992, 307300, 307310, 307491, 307253, H03K 1708, H03K 1714, G01R 1915

Patent

active

050618636

ABSTRACT:
A transistor provided with a current detecting function does not need any external resistance to detect current but uses a part of the electrode wiring through which main current flows as a resistance to prevent power loss. It detects the magnitude of main current on the basis of voltage drop caused by the resistance. Further, a stable sense voltage can be obtained without being affected by temperature change and sense voltages caused at the both ends of a sense resistance can be maintained constant with temperature change. Sense voltages can accurately correspond to the magnitude of main current flowing through a main transistor to enable excess current to be detected accurately.

REFERENCES:
patent: 4533845 (1985-08-01), Bynum et al.
patent: 4961006 (1990-10-01), Pace et al.

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