Oscillators – Solid state active element oscillator – Transistors
Patent
1984-11-27
1986-08-26
LaRoche, Eugene R.
Oscillators
Solid state active element oscillator
Transistors
331117R, 331183, H03L 500
Patent
active
046085440
ABSTRACT:
Oscillator circuit has a first and second transistors whose emitters are intercoupled and jointly connected to a variable current source, the first transistor being connected in a grounded-base connection. The oscillator current also has a parallel resonant circuit coupled to the collector of the first transistor, this collector being coupled for regenerative feedback of the circuit voltage to the base of the second transistor. Stabilization of the circuit voltage is accomplished by coupling the last-mentioned collector also to a control input of a variable current source, so that the collector current applied to the circuit is modulated in anti-phase with the circuit voltage, that is to say it instantaneously decreases at an increase of the circuit voltage and vice versa.
REFERENCES:
patent: 3649929 (1972-03-01), Thompson
patent: 3665342 (1972-05-01), Reed
Boon Cornelis A. M.
Nordholt Ernst H.
Briody Thomas A.
LaRoche Eugene R.
Pascal Robert J.
Rich Marianne R.
Streeter William J.
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