Temperature sensing circuit, driving apparatus, and printer

Details Temperature sensing circuit, driving apparatus, and printer Temperature sensing circuit, driving apparatus, and printer

1998-05-21

2000-02-22

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Temperature

327432, H01L 3500

Patent

active

060284722

ABSTRACT:
A temperature-sensing circuit has a pair of bipolar transistors of different sizes, exposed to the temperature to be sensed. A current mirror circuit, or an operational amplifier and another bipolar transistor, is used to sense the difference between the base-emitter voltages of the bipolar transistors and generate a corresponding output current, which is converted to a voltage output signal. This temperature-sensing circuit can be integrated into a driving circuit to sense the temperature of the driven elements and compensate for temperature effects. In a printer, the temperature-sensing circuit can be used for temperature compensation of dot-forming elements.

REFERENCES:
patent: 5334929 (1994-08-01), Schade, Jr.
patent: 5873053 (1999-02-01), Pricer et al.
patent: 5942888 (1999-08-01), Tan

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