Driver circuitry for capacitive transducers

The present disclosure relates to driver circuitry for driving a capacitive transducer. The circuitry comprises: output stage circuitry (330) configured to receive an input signal and to drive the capacitive transducer (340) to produce the output signal; variable voltage power supply circuitry (320)...

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Bibliographische Detailangaben
1. Verfasser:	John Paul Lesso
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BASIC ELECTRONIC CIRCUITRY CONTROL OR REGULATION THEREOF CONTROLLING CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRICITY FOR PERFORMING MECHANICAL WORK IN GENERAL GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL GENERATION LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY PERFORMING OPERATIONS PHYSICS PULSE TECHNIQUE RADIO DIRECTION-FINDING RADIO NAVIGATION REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	The present disclosure relates to driver circuitry for driving a capacitive transducer. The circuitry comprises: output stage circuitry (330) configured to receive an input signal and to drive the capacitive transducer (340) to produce the output signal; variable voltage power supply circuitry (320) configured to output a supply voltage for the charge drive output stage circuitry, wherein the supply voltage output by the variable voltage power supply circuitry varies based on the input signal; a supply capacitor (326,328) for receiving the supply voltage output by the variable voltage power supply circuitry; a reservoir capacitor (360); and circuitry for transferring charge between the reservoir capacitor and the supply capacitor (400).