公开(公告)号：US3651352A

公开(公告)日：1972-03-21

申请号：US3651352D

申请日：1970-12-10

Applicant: BRANSON INSTR

Inventor： PUSKAS WILLIAM L

IPC: B06B1/02 ,  B08B3/12 ,  H01V7/00

CPC classification number: B08B3/12 ,  B06B1/0253 ,  B06B2201/55 ,  B06B2201/71

Abstract: A high-efficient oscillatory circuit drives a piezoelectric crystal (transducer) which is coupled to an ultrasonic cleaning tank. The circuit includes a transistor switching means in the driver side of the oscillator. The primary winding of the transformer is coupled in parallel with a capacitor and forms a circuit having a resonant frequency which is a multiple even integer of the resonant frequency of the crystal which is coupled to the transformer secondary winding.

Abstract translation: 高效振荡电路驱动耦合到超声波清洗槽的压电晶体（换能器）。 该电路包括在振荡器的驱动器侧的晶体管开关装置。 变压器的初级绕组与电容器并联并形成具有谐振频率的电路，谐振频率是耦合到变压器次级绕组的晶体的谐振频率的多偶数整数。

公开(公告)号：US3681626A

公开(公告)日：1972-08-01

申请号：US3681626D

申请日：1971-11-11

Applicant: BRANSON INSTR

Inventor： PUSKAS WILLIAM L

IPC: H03B5/08 ,  B06B1/00 ,  B06B1/02 ,  B06B1/06 ,  B08B3/12 ,  H03B5/12 ,  H03B5/30 ,  H01V7/00

CPC classification number: B06B1/0253 ,  B06B2201/55 ,  B06B2201/71

Abstract: An oscillatory circuit for ultrasonic cleaning apparatus, omitting an output transformer, includes a half bridge transistor switching circuit and an oscillatory circuit to which a variable quantity of ultrasonic transducers are connectable. The feedback circuit for causing the transistors to be alternatingly conductive comprises a transformer winding and the serially connected parallel connection of a capacitor and unidirectional current conduction means (rectifier) so selected that during the non-conductive period the associated transistor is biased with a potential slightly less than the base-emitter electrode breakdown voltage.