DZW75-48/5050II input circuit


Posted on Feb 5, 2014

220V (5Hz) alternating voltagepass Z1 circuit filter filtering, then it will send to the connect point of AC over voltage, under voltage protect relay K2. When normal working, K2 connect point should up-close, connect AC 220V voltage to AC current-limiting resistance R4 (after starting up, delay period of time, R1 is short-circuit by K1 connec


DZW75-48/5050II input circuit
Click here to download the full size of the above Circuit.

t point), send to power frequency bridge rectifier rectifying, get DC 300V output voltage through parallel connection condenser bank smoothed filtering, finish power frequency AC/DV transform. R2 is leak resistance. (2) Z1 circuit filter is used for suppressing and absorbing obstruction of strong pulse to rectifier on electric network, increasing the reliability of rectifier. At the same time, the good common mode and difference module insertion loss of circuit filter can effectively inhibit inverted output high frequency interfering signal generated by high frequency switching converter, it canisolate rectifier and electric fence, avoid mutual interference. (3) AC over voltage, under voltage protection circuit, AC 220V voltage sended to reducing transformer after through circuit filter filtering. (4)AC current limiting delay circuit, AC voltage can switch-in machine in normal work range, build time at auxiliary power supply after AC power supply switch-in, andby a period of time delay after auxiliary power supply build, it can make AC current-limiting resistance short-circuit, this period time is AC current limiting delay, it is finish by AC current limiting delay circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    McCAD PCB software
    Digital Storage Oscilloscope Adapter
    Motor speed controller
    Adjustable notch filter
    Voice Scrambler/Disguiser Circuit
    Telephone Ringer Using Timer ICs
    WSH412 Hall Effect Sensor IC With Thermal Lock Protection And Auto Restart Function
    door loock circuit
    555 DC/DC Converter
    pic raymarine seatalk bus interface
    Controlling high-current circuits
    Special power circuits 7905 7805 7812
    Neon high-voltage power supply circuit diagram
    Simple and practical circuit diagram of an elevator failure alarm
    Incandescent Yeonsu electronic controller 1



    Top