Oscillators – Solid state active element oscillator – Transistors
Patent
1994-12-28
1995-12-05
Mis, David
Oscillators
Solid state active element oscillator
Transistors
331 65, 331158, 331176, 310316, 7350412, H03B 504, H03B 536, H03K 3011, H03L 102
Patent
active
054732883
ABSTRACT:
The oscillation circuit 30 has the two input terminals 32a and 32b connected to the piezoelectric elements 3a and 3b of vibrator 1. These input terminals 32a and 32b are connected to the two input terminals of the adder 36 via the buffers 34a and 34b. The output terminal of the adder 36 is connected to the inversion input terminal of the operational amplifier 44 used as a comparator and the input terminal of the control signal generator 46. The output terminal of the operational amplifier 44 is connected to the collector of the transistor 62 and the output terminal of the control signal generator 46 is connected to the base of the transistor 62. The emitter of the transistor 62 is connected to the output terminal 80 via the phase-shifting circuit 70. The output terminal 80 of the oscillation circuit 30 is connected to the piezoelectric element 3c of the vibrator 1.
REFERENCES:
patent: 3577099 (1971-05-01), Hall et al.
patent: 4283691 (1981-08-01), Burgoon
patent: 5220833 (1993-06-01), Nahamura
patent: 5345822 (1994-09-01), Nakamura et al.
patent: 5349261 (1994-09-01), Fujimoto et al.
patent: 5349857 (1994-09-01), Kasanami et al.
patent: 5355034 (1994-10-01), Nakamura et al.
patent: 5412204 (1995-05-01), Nakamura
patent: 5414320 (1995-05-01), Mashio
Mis David
Murata Manufacturing Co. Ltd.
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