Feeding Arrangement for an Ultrasonic Device
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United States of America Patent
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Issued Date -
Dec 10, 2009
app pub date -
Apr 30, 2007
filing date -
May 8, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a powerful 3-point inverter that is triggered by a pulse width modulator (5). The generated inverter voltage (Upwm) is used as an input signal for the LLCC bandpass filter (8) comprising a parallel inductor (Lp) that is arranged parallel to the ultrasonic device and a series resonant circuit (6) containing at least one series inductor (L5) and at least one series capacitor (C5). The LLCC filter additionally comprises the transformer (T) to isolate the potential while also comprising a cable if the ultrasonic actuators are placed at a certain distance such that a low-harmonic, broadband actuator voltage can be generated. The filter utilizes the capacity of the ultrasonic actuator (Cp), the capacity of the cable if a connecting cable is required, and the leakage inductance of the transformer.
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