Temperature-stabilized oscillator

Details Temperature-stabilized oscillator Temperature-stabilized oscillator

1988-09-23

1989-09-19

LaRoche, Eugene R.

Oscillators

Solid state active element oscillator

Transistors

331176, H03K 300

Patent

active

048685259

ABSTRACT:
An oscillator with reduced temperature-dependence. A time-delay circuit uses both a pull-up resistor and a pull-down resistor, of two different types, to charge a capacitor. The material with the smallest available thermal coefficient of resistance (TCR) is used for the pull-up resistor. Another material, with a larger positive TCR, is used for the pull-down resistor. The oscillator preferably includes two separate time-delay circuits, so that the frequency of the oscillator is dependent on the charging delay of each of the time-delay circuits, but is independent of discharging delay.

REFERENCES:
patent: 4015219 (1977-03-01), Kawagoe et al.
patent: 4594565 (1986-06-01), Barreras

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