Sine wave oscillator having a self-startup circuit
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United States of America Patent
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May 5, 2009
Grant Date -
Oct 16, 2008
app pub date -
Apr 7, 2008
filing date -
Apr 9, 2007
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Abstract
Disclosed herein is a sine wave oscillator having a self-startup circuit. The sine wave oscillator can start up and output sine waves having a constant frequency without receiving any signals other than supply voltage. The sine wave oscillator includes an operational amplification unit, a first resistor, a first capacitor, a second capacitor, a second resistor, a third resistor, a fourth resistor, and a startup circuit.
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