Circuit configuration to detect excess temperature due to curren

Details Circuit configuration to detect excess temperature due to curren Circuit configuration to detect excess temperature due to curren

1998-02-04

1999-11-23

Lam, Tuan T.

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Temperature

327565, H02H 504

Patent

active

059907266

ABSTRACT:
The invention is directed to a circuit configuration for the detection of an excess temperature due to a current flow, in which a first resistor arrangement is thermally coupled to a second resistor arrangement, the resistance value of the second resistor arrangement producing a thermistor action. The current to be evaluated is flown through at least the first resistor arrangement. The first resistor arrangement is comprised of at least one SMD resistor, and the second resistor arrangement of at least one SMD resistor that acts as a thermistor. The second resistor arrangement is electrically connected to at least one contact surface of the printed circuit board which is electrically connected to the at least one SMD resistor of the first resistor arrangement.

REFERENCES:
patent: 4764663 (1988-08-01), Scott
patent: 5258738 (1993-11-01), Schat
patent: 5563572 (1996-10-01), Hetzler
Bauelemente und Technik fur die Oberflachen-Montage, SMD, 1985.

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