C-MOS crystal oscillator including circuit for temporarily increasing closed loop gain
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 19, 1980
Grant Date -
N/A
app pub date -
Nov 22, 1977
filing date -
Nov 22, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An oscillator circuit wherein the impedance at the output terminal can be selectively decreased for a short period of time to thereby increase the closed loop gain is provided. The oscillator circuit includes a quartz crystal vibrator and a C-MOS inverter having a drain output terminal for producing a high frequency signal thereat, the gate output terminal being fed back through the quartz crystal vibrator to a gate input terminal to define a predetermined closed loop gain. The invention is particularly characterized by a control circuit external to the oscillator circuit that is adapted to produce a control signal for a predetermined period of time. A secondary inverter is provided and is adapted to be selectively coupled, in parallel, with the C-MOS inverter during the period of time that the control signal is applied thereto, to thereby reduce the impedance at the output terminal of the C-MOS inverter and increase the closed loop gain during the predetermined period of time that the control signal is applied thereto.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully