Oscillators – With oscillator circuit protective means
Patent
1997-12-03
1999-07-27
Grimm, Siegfried H.
Oscillators
With oscillator circuit protective means
331158, 331186, 368159, H03B 532, H03L 100, H03L 500, G04F 506
Patent
active
059297158
ABSTRACT:
An oscillation circuit is driven at reduced power by a constant voltage V.sub.reg having an absolute value that is lower than that of a power voltage V.sub.ss of a main power source. An electrostatic protective circuit provided in this oscillation circuit is connected between a signal path and this constant voltage V.sub.reg. It comprises a first electrostatic protective circuit portion that causes any electrostatic voltage of a first polarity that invades the signal path to be selectively diverted through a diode to the constant voltage V.sub.reg side of the circuit, and any electrostatic voltage of a second polarity that invades the signal path to be selectively diverted through another diode to the ground side. This ensures that the oscillation circuit is not affected by fluctuations in the power voltage from the main power source, enabling it to oscillate at a stable frequency.
REFERENCES:
patent: 3868597 (1975-02-01), Gollinger
patent: 3939644 (1976-02-01), Wolf
patent: 4048584 (1977-09-01), Ulmer
patent: 4066918 (1978-01-01), Heuner et al.
patent: 4605980 (1986-08-01), Hartranft et al.
patent: 5546055 (1996-08-01), Klughart
Kadowaki Tadao
Makiuchi Yoshiki
Nakamiya Shinji
Yabe Hiroshi
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