Voltage controlled oscillator clamp circuit

Details Voltage controlled oscillator clamp circuit Voltage controlled oscillator clamp circuit

1987-05-12

1989-01-17

LaRoche, Eugene R.

Oscillators

Solid state active element oscillator

Transistors

331167, H03B 508

Patent

active

047990309

ABSTRACT:
An oscillator circuit having a coil and capacitor tank circuit, a clamp resistor connected at one end to the coil and a switch coupled to the clamp resistor and coil. The switch is operative to close in response to a first input logic clamp signal and shunt the coil with an impedance that causes the oscillation to stop quickly. In response to removal of the input logic clamp signal the tank circuit starts to oscillate from a known state. Preferably the clamp resistor has a value which equalizes the tank currents for the clamped and peak unclamped states.

REFERENCES:
patent: 4716383 (1987-12-01), Lofgren et al.

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