Signal source for use with an LC tank circuit

Details Signal source for use with an LC tank circuit Signal source for use with an LC tank circuit

1987-10-07

1989-05-23

Grimm, Siegfried H.

Oscillators

Shock excited resonant circuit

331167, 331183, H03B 1104

Patent

active

048334278

ABSTRACT:
A signal source for generating a well-controlled, predictable oscillating output signal within a short, predetermined and constant start-up time is disclosed. The invention includes a switchable current source for selectively providing an electrical signal to a tank circuit which, in response, provides an oscillating output signal. A control circuit, comprising a comparator is connected to the tank circuit for providing a control signal to the switchable current source which causes the current source to switch in response to the output signal. Particular embodiments of the invention include means for controlling the amplitude of the oscillating output signal, means for controlling the transconductance of the current source, and means for starting the signal source.

REFERENCES:
patent: 4617534 (1986-10-01), Lill

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