System and method for controlling an acoustic transducer,申请号US20100755481-传众专利搜索

System and method for controlling an acoustic transducer

申请公布号：US8331196(B2)

申请号：US20100755481

申请日期：2010.04.07

申请公布日期：2012.12.11

申请人：

WEINER NATHAN K.;COVARIS, INC.

发明人：WEINER NATHAN K.

分类号：H04B1/02

主分类号：H04B1/02

摘要：A system and method for controlling operation of a transducer circuit, e.g., including an acoustic transducer arranged to cause mixing, cavitation or other movement in a liquid contained in a vessel located remote from the transducer. A load current of a transformer used to generate a drive signal for the transducer may be controlled to vary sinusoidally, to vary between negative and positive values and such that the load current flows in a closed loop when a zero voltage bias is applied across the primary transformer winding, to have a reduced or eliminated 3rd harmonic mode and/or to vary between three discrete modes including a forward current mode, a zero voltage loop current mode, and a freewheel current mode. An inverter circuit may be used to control the load current, e.g., so that the load current flows in a closed loop during portions of the control cycle.