Temperature detection circuit used in thermal shielding circuit

Details Temperature detection circuit used in thermal shielding circuit Temperature detection circuit used in thermal shielding circuit

1991-05-21

1992-09-22

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

307310, 307355, 374183, G05F 320, H01L 2978

Patent

active

051491990

ABSTRACT:
A temperature detection circuit includes first and second current sources and a comparing circuit. A first current source generates a current having a positive temperature coefficient and flowing in a band gap type voltage source. A second current source generates a current having a zero or negative temperature coefficient. The comparing circuit compares the amounts of currents flowing in the first and second current sources to detect the relation between the magnitudes of the compared currents.

REFERENCES:
patent: 4350904 (1982-09-01), Cordell
patent: 4574205 (1986-03-01), Nagano
patent: 4698655 (1987-10-01), Schultz
patent: 4736125 (1988-04-01), Yuen
patent: 4789819 (1988-12-01), Nelson

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