Oscillation circuit
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United States of America Patent
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Dec 20, 2016
Grant Date -
Jul 21, 2016
app pub date -
Jan 13, 2016
filing date -
Jan 15, 2015
priority date (Note) -
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Abstract
An oscillation circuit includes an electrical current generating portion configured to generate an electrical current having an oscillation frequency decreasing as an amplitude thereof is decreased; a control voltage generating portion configured to generate a control voltage having a magnitude decreasing as a magnitude of a power source voltage is decreased; and an electrical current control portion. The electrical current control portion includes a first input terminal connected to the control voltage generating portion for receiving the electrical current; a control terminal connected to the control voltage generating portion for receiving the control voltage; and a first output terminal. The electrical current control portion is configured to reduce the amplitude of the electrical current flowing between the first input terminal and the first output terminal as the magnitude of the control voltage is decreased.
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