Steinbusch
Hans Steinbusch, Landgraaf NL
Patent application number | Description | Published |
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20090146529 | STARTING-PROCESS CONTROLLER FOR STARTING A PIEZOMOTOR - A starting-process controller for starting a piezomotor, having a voltage-controlled oscillator, a power output stage, and a resonant converter. The oscillator generates the control signals required for the power output stage and the resonance converter converts the stepped output voltage from the power output stage into a sinusoidal voltage at the output. The resonance converter drives the piezomotor with the voltage. The motor current that flows when the piezomotor is driven is measured and compared with the phase of the drive voltage in a phase comparator. The comparison output signal is a measure of the phase difference at the time between current and voltage. A phase-locked loop filter smoothes the phase-difference signal for controling the oscillator. The controller includes a start-assisting circuit element that fixes the output voltage from the phase-locked loop filter at start-up and thus applies a constant voltage to the input of the voltage-controlled oscillator. | 06-11-2009 |
Kirsten Johanna J. Steinbusch, Wageningen NL
Patent application number | Description | Published |
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20100317071 | Method for the Enzymatic Production of Fatty Alcohol and/or Fatty Acid - The invention relates to a method for the enzymatic production of C | 12-16-2010 |
Otto Steinbusch, Mountain View, CA US
Patent application number | Description | Published |
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20090158066 | Power management using automatic load/unload detection of DAC - An automatic load detection system. A first reference signal that may be known apriori can be used for load detection. For example, the first reference signal may be used for invisible portion of a frame. The DAC receives the first reference signal and outputs a signal that is based on the first reference signal. The output of the DAC may have two known values depending on whether the load is coupled to the DAC, e.g., by having a different impedance. Thus, the output signal may be used for detecting whether the load is uncoupled from the DAC. If it is determined that the load is uncoupled from the DAC, the clocking signal to the DAC may be turned off. Thus, DAC no longer consumes power when the load is uncoupled, thereby saving power. | 06-18-2009 |
20110096880 | Lossless Transfer Of Events Across Clock Domains - Transfer circuits ( | 04-28-2011 |