Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1980-06-30
1982-01-26
Beha, Jr., William H.
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
307310, 323907, 330266, 330267, G05F 320
Patent
active
043130828
ABSTRACT:
A circuit for providing a current having a positive temperature coefficient including a first circuit for producing a first current having substantially a constant temperature coefficient (or a negative temperature coefficient) of a first predetermined value. The first current source is coupled to a current sink circuit which sinks a known value of current from said first circuit, the current sunk by the current sink circuit having a negative temperature coefficient of a second predetermined value. The negative temperature coefficient current of the current sink circuit being greater than the negative temperature coefficient of the current source so that a difference current is provided having a positive temperature coefficient.
REFERENCES:
patent: 3619798 (1971-11-01), Smith et al.
patent: 3809929 (1974-05-01), Vittoz
patent: 4004462 (1977-01-01), Dobkin
patent: 4262244 (1981-04-01), Price
Electronics, "Integrated Temperature Transducers", pp. 130, 131, Nov. 1974.
Elektor (English), vol. 2, No. 7-8, p. 746, Jul.-Aug. 1976.
Beha Jr. William H.
Bingham Michael D.
Motorola Inc.
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