Current controlled oscillator

Details Current controlled oscillator Current controlled oscillator

1997-03-26

1998-11-10

Nelms, David

Oscillators

Solid state active element oscillator

Transistors

331176, H03K 326

Patent

active

058349847

ABSTRACT:
A current controlled oscillator is provided for reducing oscillation frequency variation because of temperature dependence of the current amplification efficiency of transistors, comprising a differential amplifier having a pair of transistors, a capacitor collected between collectors of the pair of transistors, and a positive feedback circuit for turning each of the pair of transistors to ON and OFF alternately and complementarily. A temperature compensation circuit is provided for supplying one of the collectors of the pair of transistors with a compensation current proportional to a base current of one of the pair of transistors at status ON together with a constant current.

REFERENCES:
patent: 4063193 (1977-12-01), Wilcox
patent: 5151667 (1992-09-01), Nishijima

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