An oscillation circuits that provides stable oscillations even when the amount of phase rotation of a piezoelectric resonator is small or fluctuates. The oscillation circuit includes a first amplifier having an input and an output, and a piezoelectric resonator connected between the input and the output of the first amplifier. Moreover, the oscillation circuit feeds, back to the input, a current flowing from the output of the first amplifier to the piezoelectric resonator. The oscillation circuit further includes an alternating-voltage waveform shaping circuit that applies, to the piezoelectric resonator, an alternating-voltage waveform having rising portions sharper than those of a sine wave.
Oscillation circuit and oscillation-circuit driving method
2019-10-29
Patent
Elektronische Ressource
Englisch
IPC: | H03B Erzeugung von Schwingungen, unmittelbar oder durch Frequenzwandlung, durch Schaltungsanordnungen mit aktiven Bauelementen, die nicht als Schalter arbeiten , GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER / B06B GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL , Erzeugen oder Übertragen mechanischer Schwingungen allgemein / B60B VEHICLE WHEELS , Räder für Fahrzeuge / H03L Automatisches Steuern oder Regeln, Inbetriebsetzen, Synchronisieren oder Stabilisieren elektronischer Schwingungs- oder Impulserzeuger , AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES |
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