Control circuit for piezoelectric vibrator and watch using said circuit

A source of electrical potential (1) is connected to two parallel circuits. Each circuit comprises an inductor coil (2, 2'), a diode (3, 3') and a switching transistor (T1, T2). A piezoelectric buzzer (4) is connected between the two diode to transistor junctions (B, B'). The two swit...

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Bibliographische Detailangaben
Hauptverfasser:	B. SOLTERMANN, S. JABBOUR
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROMECHANICAL CLOCKS OR WATCHES ELECTRONIC TIME-PIECES FOR PERFORMING MECHANICAL WORK IN GENERAL GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL HOROLOGY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY PERFORMING OPERATIONS PHYSICS PUBLIC ADDRESS SYSTEMS RESONATORS TRANSPORTING
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Beschreibung
Zusammenfassung:	A source of electrical potential (1) is connected to two parallel circuits. Each circuit comprises an inductor coil (2, 2'), a diode (3, 3') and a switching transistor (T1, T2). A piezoelectric buzzer (4) is connected between the two diode to transistor junctions (B, B'). The two switching transistors (T1, T2) are supplied with signals (S1, S2) which make them alternately conduct and block. When one transistor (T2) conducts and the other (T1) blocks, energy is stored in the corresponding inductor (2') which is then applied to the buzzer as the transistor switching is reversed by the signals (S1, S2).