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Recent content by vicky.pace

  1. V

    contactor coil control circuit

    Hi All, Here is a new concept which I got listen that to reduce the power consuption of a contactor, there are some electronic circuits which gives sufficient power when a contactor starts and once picked up the circuit reduces the drive power to coil. By doing this ,it saves power. This...
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    PIC 12F675 Vs. 12F510

    Dear All, If Anyone can tell me which micro is best for power where live supply is controlling contactors with high spikes. One of my fried got problem in same type of project when he used 12F675. It gets hanged many time even WDT is active. Shoul I use 12F510???? Thanks Vicky
  3. V

    isolated linear amplifier

    Dear All, Please let me know how I can transfer 0-5V optically with 1:1. Thanks Vicky
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    AC Servo motor in place of DC Servo

    Dear All, This is a new concept on which we are working. As you know In auto insertion machines, DC servo motors are used for X, Y & Z coordinats. These motors require more maintanance and have less life as compare to AC Servo motors. We have developed a new servo card which can be...
  5. V

    Latching Analog Voltage - sample and Hold

    Re: Latching Analog Voltage I want to latch the voltage level on all 6 stages where 4051 is connected. Vicky
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    Latching Analog Voltage - sample and Hold

    Re: Latching Analog Voltage Dear Sir, The voltage level is not fix all times. It needs to be modified frequently. I am using a DAC connected to micro and after it there is 4051 to share outputs in 6 stages. Vicky
  7. V

    Latching Analog Voltage - sample and Hold

    Latching Analog Voltage Dear All, I am working on a project where I need to latch the analog voltage. In this there are 6 amplifiers which requires 0-10V varriable voltages and all should be latched on desire levels until we don't change. The microcontroller is working on time sharing having...
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    High inrush triac protection circuit

    Hi, I am using here RC Snuber. Vicky
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    High inrush triac protection circuit

    Dear All, I am using BTA41 triac to operate 115V .75 HP motor. But as I switch on, the triac blows off. please let me know hw I can protect the same as I am alredy using a suitable snubber circuit. regards Vicky
  10. V

    zero crossing triac switch

    Dear all, Please tell me hw I can switch a triac at zero cross state. I found a opto(MOC3162) in which this provision is inbuit but device is not available in India. If someone can suggest a small simple circuit for the same. It wound be a great help to me. thanks. Vicky
  11. V

    Off delay Timer without battery

    In fact we may use A latching relay for this. Vicky
  12. V

    Off delay Timer without battery

    Off delay Timer Dear All, I want to make a OFF DELAY TIMER which switch over after power goes. It works with power stored inside the circuit and switches relay after set time i.e. 0-60 sec. There will not be any battery inside. Please suggest. Regards Vicky
  13. V

    How does this 3 phase preventor work?

    Hi All, Here I am attaching a schematic diagram which is designed for 3phase prevention as missing phase & reversal phase. My question is hw this circuit works. If someone can explain its working, I would be so greatfull. Thanks & Regards Vikram
  14. V

    Coppying micro SD card thru microcontroller

    sd microcontroller Dear All, Please suggest me about coppying micro SD card thru microcontroller based stand alone hardware. Read/write timing/protocols will also be very usefull. Thanks in advance for your valuable suggestions. Regards Vikram
  15. V

    where the power gone small white LED based lamp

    small based lamps Dear all, Here I have made a small white LED based lamp in which I have used a .39uF400v poly capacitor for droping voltage. All 10 LEDs are in series and glowing very well but what I am seeing that input current is equal to output current mean input power is 220X.02=4.4W and...
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