Oscillator circuits

Details Oscillator circuits Oscillator circuits

1975-12-08

1977-01-04

Kominski, John

Oscillators

Solid state active element oscillator

Transistors

H03K 450

Patent

active

040017230

ABSTRACT:
A micropower, latch-up free, relaxation oscillator includes a switch such as a programmable unijunction transistor or a silicon-controlled-switch. The switch is coupled at its gate electrode via an emitter-follower circuit of low output impedance, to a source of reference potential provided by a relatively high resistance resistive voltage divider. The condition of the switch, whether conducting or not, is controlled by a resistor-capacitor timing circuit. When the capacitor charges to a given level, it causes the switch to conduct and to act as a discharge circuit for the capacitor. When the capacitor discharges to a second level, the switch goes off and the cycle then repeats.

REFERENCES:
patent: 3526853 (1970-09-01), Vittoz
patent: 3882421 (1975-05-01), Stein
patent: 3916343 (1975-10-01), Suzuki

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