Oscillation circuit having electrostatic protective circuit
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United States of America Patent
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Nov 14, 2000
Issued Date -
N/A
app pub date -
Mar 4, 1999
filing date -
Dec 4, 1996
priority date (Note) -
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Abstract
An oscillation circuit including an electrostatic protective circuit 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.
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