Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1982-06-29
1984-10-30
Perkey, William B.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
354428, 354459, 354464, 250214P, 250214C, 250214L, 307297, 307491, 323907, G03B 7083, G05F 308
Patent
active
044797087
ABSTRACT:
Disclosed is a temperature compensation system for light measuring circuits. Said system compensates for the change, over temperature, of the output of the light measuring circuit by applying a bias source with a predetermined temperature coefficient. The system is designed so the bias voltage source is derived from the V.sub.BE (base to emitter voltage) difference between a pair of transistors, which difference is generated by the difference of current density at the junction of the pair of transistors obtained by flowing a pair of currents with a constant ratio independent of temperature.
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patent: 4303318 (1981-12-01), Kitaura et al.
patent: 4375321 (1983-03-01), Suzuki et al.
IBM Technical Disclosure Bulletin, "Temperature Compensated Voltage Reference Source", by Chung C. Liu, vol. 14, No. 4, Sep. 1971.
Canon Kabushiki Kaisha
Perkey William B.
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