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Recent content by Zohaibmaroof

  1. Z

    howto operate a 12 volt dc RELAY with 89C51

    I want to thanks to all those people who answered my Question Here is my FINAL YEAR Project's video which i have finally completed with best excellence .watch it out Ultrasonic navigation System first time made in Pakistan if i am not Wrong(Made By Zohaib) - YouTube ---------- Post added at...
  2. Z

    how to drive a vibration motor(cell phones) with variable speed using 89c51 & DAC0808

    Re: how to drive a vibration motor(cell phones) with variable speed using 89c51 & DAC I want to thanks to all those people who answered my Question Here is my FINAL YEAR Project's video which i have finally completed with best excellence .watch it out Ultrasonic navigation System first time...
  3. Z

    how to make negative voltage from Dc voltage by using single 9 volt battery

    I want to thanks to all those people who answered my Question Here is my FINAL YEAR Project's video which i have finally completed with best excellence .watch it out Ultrasonic navigation System first time made in Pakistan if i am not Wrong(Made By Zohaib) - YouTube
  4. Z

    howto operate a 12 volt dc RELAY with 89C51

    i m not getting your point how can i charge both batterys in series, i mean is it possible that if i connect negative terminal of charger/adapter to the negative terminal of 1st battery which is used to give negative 9 volt , and then connect positive terminal of charger/adapter to the positive...
  5. Z

    howto operate a 12 volt dc RELAY with 89C51

    this is my circuit which will connect batterys in series when charger/adapter is not connected and when charger/adapter is connected it will make parallel both batterys and obviously charger both of them by charger connected
  6. Z

    howto operate a 12 volt dc RELAY with 89C51

    no no... that picture which showing two 9v batterys are not rechargable battery , i just showed you the picture that i have connected batterys in this way, and 1 thing more i will not make any charging circuit, i will simply connect a 9V DC charger/adapter to 9V Rechargable batterys, this...
  7. Z

    howto operate a 12 volt dc RELAY with 89C51

    no that circuit is not working i have tried it , but when i connect that part which should be connected through microcontroller port , to VCC then relay turn on, but by microcontroller port it is not working you know i lost 3 controller for this ---------- Post added at 13:15 ----------...
  8. Z

    howto operate a 12 volt dc RELAY with 89C51

    Thanks a lot for your reply but i have number of question which is shown in this picture i am putting below
  9. Z

    howto operate a 12 volt dc RELAY with 89C51

    i want to operate 12 volt relay with 89C51 any idea? i wrote a program which set HIGH at pin 1.0 , although its working and giving 5 volt but does not turn on 6 volt relay any idea what to do with this, i have also tried to connect a 2N2222 and also d313 with this pin 1.0 and take output from...
  10. Z

    how to use 89C51 to dirve motor to 17 difrent places & on every place it should stop

    how to use 89C51 to dirve motor to 17 difrent places & on every place it should stop i want to make a program which drive a motor to 17 different places an stop on every place then ti will remain there at a given timer value , program will start in this way that at 1st operator or USER will...
  11. Z

    how to make negative voltage from Dc voltage by using single 9 volt battery

    i want to make negative voltages by using sinlge 9 volt battery with minimum circuitry , i used 7905 to get negative 5 volt but problem is 7905 needs negative voltages at its input is there any simple way to get negative voltage like by using only 1 IC ?
  12. Z

    how to drive a vibration motor(cell phones) with variable speed using 89c51 & DAC0808

    Re: how to drive a vibration motor(cell phones) with variable speed using 89c51 & DAC SRf04 ultrasonic range finder is a sensor which sends and receive automatically i just have to trigger its input pin (by making its trigger pin HIGH for 10 us) then sensor sends echos and make its ECHO OUT PIN...

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