Resources Contact Us Home
Apparatus for generating ultrasonic signals

Image Number 2 for United States Patent #4888565.

An ultrasonic generator, particularly for use in ultrasonic cleaning systems, provides a constant ultrasonic power output for a cleaning tank or chamber. A generator output stage fed from an unsmoothed mains power supply receives signals from an oscillator via a pulse-width modulation circuit. A power control feedback loop monitors the mains current, or alternatively the output signal from the output stage, and provides a compensation signal to the pulse-width modulation circuit. A frequency control feedback loop senses the current in the output from the output stage and tunes the generator for maximum current in this output.

  Recently Added Patents
Routing of data including multimedia between electronic devices
Specializing disambiguation of a natural language expression
Lipoprotein analysis by differential charged-particle mobility
System and method for reducing the risks involved in trading multiple spread trading strategies
Lens barrel and imaging device
Method of operating an election ballot printing system
Bandpass filter and radio communication module and radio communication device using the same
  Randomly Featured Patents
Cover sleeve for pot
Interferometric thickness analyzer and measuring method
Pneumatic tire for motorcycle with tread wings and with sidewalls each having inner layer and outer layer
Stimulation of muscles
Unitary composite molding strip
Portable room humidifier
Device for a person to reduce straining during expulsion of fecal matter into a toilet
Washings weight detection and washing operation control system
Auxiliary walker
Propofol-based anesthetic and method of making same