Low noise crystal oscillator

Details Low noise crystal oscillator Low noise crystal oscillator

1984-04-09

1985-08-20

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331 74, 331158, H03B 536

Patent

active

045367213

ABSTRACT:
A crystal oscillator comprises an active coupling member driving the series mode resonance of a piezoelectric crystal proportionally to a feedback voltage. Said coupling member is followed by a current boosting transformer whose secondary winding is connected to an output amplifier and to a clipping amplifier shunted across said secondary winding and itself followed by a band-pass filter which supplies said feedback voltage to said coupling member.

REFERENCES:
patent: 3315179 (1967-04-01), Whitbread
patent: 3358244 (1967-12-01), Er-Chun Ho et al.
patent: 3382447 (1968-05-01), Racy

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