MICROPROCESSOR CONTROL USE

Brand Owner Address Description
CEM-TEK CogniTek Management Systems, Inc. 4132 Cove Lane, Suite A Glenview IL 60025 microprocessor control for use in providing thermodynamic optimization for refrigeration and air conditioning compressors, heating ventilating and air conditioning (HVAC) boilers, furnaces and refrigerators;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A method and an apparatus measure an actual responsive time for a relay and control the open/close timing for the relay. The apparatus comprises a microprocessor and two conversion units. One conversion unit processes an input sinusoidal signal for the microprocessor and the microprocessor sends a control signal to energize or de-energize a coil of the relay at an arbitrary time point. Another conversion unit senses a waveform change after the switch of the relay and sends a state signal to the microprocessor. Therefore, the microprocessor can obtain an actual responsive time of the relay by the difference between the control signal and the state signal. The microprocessor will apply next control signal with a time lead of the responsive time before next zero-crossing point to achieve zero-crossing switch for the relay.