Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1987-11-17
1988-12-20
Beha, Jr., William H.
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
323315, 323907, G05F 326
Patent
active
047927488
ABSTRACT:
A two-terminal temperature-compensated current source includes a first transistor having its emitter connected to a first terminal, its base connected to the base of a second transistor, and its collector coupled to a current mirror. The second transistor has its emitter coupled to the first terminal by a first resistor and its collector coupled to the current mirror. A second resistor is coupled between the first terminal and the base of the first transistor. The current mirror is coupled between a second terminal and the collectors of the first and second transistors so that all current supplied to the current mirror from the second terminal flows into the collectors of the first and second transistors. A third transistor has its base coupled to the collector of the first transistor, its emitter coupled to the base of the first transistor, and its collector coupled to the second terminal. The current in the first resistor has a positive temperature coefficient, and the current in the second resistor has a negative temperature coefficient. The temperature coefficient of the total current flowing between the first and second terminals is adjusted by adjusting the ratio between the first and second resistors.
REFERENCES:
patent: 4030023 (1977-06-01), Keith
patent: 4302718 (1981-11-01), Shade
patent: 4342926 (1982-08-01), Whatley
patent: 4380728 (1983-04-01), Kearney
patent: 4446419 (1984-05-01), Van De Plassche et al.
patent: 4450367 (1984-05-01), Whatley
patent: 4460865 (1984-07-01), Bynum et al.
patent: 4472675 (1984-09-01), Shinomiya
patent: 4622512 (1986-11-01), Brokaw
patent: 4673867 (1987-06-01), Davis
patent: 4677368 (1987-06-01), Bynum
patent: 4683416 (1987-07-01), Bynum
"Temperature Compensated Voltage Reference Source", Chung C. Liu, IBM Technical Disclosure Bulletin, vol. 14, No. 4, Sep. 1971, pp. 1223-1224.
Burt Rodney T.
Stitt, II Robert M.
Thomas David M.
Beha Jr. William H.
Burr-Brown Corporation
LandOfFree
Two-terminal temperature-compensated current source circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two-terminal temperature-compensated current source circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-terminal temperature-compensated current source circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1911268