High performance oscillator circuit with minimum frequency pulli

Details High performance oscillator circuit with minimum frequency pulli High performance oscillator circuit with minimum frequency pulli

1992-07-10

1993-12-07

Grimm, Siegfried H.

Oscillators

Combined with particular output coupling network

Space discharge or unilaterally conductive device in output...

331116R, 331158, H03B 536

Patent

active

052686574

ABSTRACT:
A high performance oscillator with low frequency pulling at turn on includes an oscillator transistor, a resonating element and a common base buffer transistor. The resonating element of the oscillator is a circuit having a crystal resonator that is connected in parallel with a transformer winding. This resonating element is connected between the emitter of the oscillator transistor and the emitter of the buffer transistor. More specifically, a tap connects the emitter of the buffer transistor to the transformer winding of the resonating element. With this connection, a low transformed power oscillating output is taken from the collector of the buffer transistor with minimized degradation in the symbol of merit for the crystal oscillator.

REFERENCES:
patent: 4570132 (1986-02-01), Driscoll
patent: 4593256 (1986-06-01), Bickley
patent: 5166647 (1992-11-01), Riebman

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