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Recent content by Ogu Reginald

  1. Ogu Reginald

    Reduction of 48V DC to 12V DC

    Hi, I have a bank of battery with output voltage of 48V. Now there is an electronic circuit which requires 12V, 1A to work. I want the simplest circuit diagram that can be used to reduce the 48V to 12V. Thanks.
  2. Ogu Reginald

    Timer 0 and Timer 1 of the AT89S52

    This a part of my entire code. The timer 1 is intended to generate a 1sec delay, during the 1 sec delay, timer 0 will be counting the frequency of the pulse connected to it. When TF1 is raised (after 1 sec), The number of pulse (frequency) is displayed on an LCD. Please don't bother on the...
  3. Ogu Reginald

    Timer 0 and Timer 1 of the AT89S52

    Thank you very much. I will upload the code I am writing after reading and watching the video very soon.
  4. Ogu Reginald

    Timer 0 and Timer 1 of the AT89S52

    I want to use either Timer0 or Timer1 of the AT89S52 microcontroller to measure external pulse. While reading, I came across an example that tries to set up timer0. The example is using a frequency of 24MHz. Below is a part of the code. TMOD=0x52; // timer 0 mode 2, counter 1 mode 1...
  5. Ogu Reginald

    microcontroller misbehaving

    Try adding a 100uF capacitor near the microcontroller between the VCC and the ground.
  6. Ogu Reginald

    microcontroller misbehaving

    Hope you wrote a logic 1 in your code to make the input pins well defined? Are you by any means using external pull up resistor?
  7. Ogu Reginald

    AVR simulation in proteus

    If the version of the program you are using is the demo version, I don't think you can edit the parameters but if it is the professional version, you can easily edit the parameters by typing.
  8. Ogu Reginald

    Push Pull Converter with Load - voltage drop Issue

    Connect the output of the device through a step down transformer to the inverting input of the SG3524 and connect the non inverting pin to a reference voltage. This ensures that the output is constant at all times, if you are confused please read the datasheet of SG3524.
  9. Ogu Reginald

    Discussing about trademark.

    All I know is that trademark is associated with patent while registration of a company has to be done through the Co-operate Affairs Commission. This is for Nigeria and I think it should be applicable to many countries.
  10. Ogu Reginald

    HT12 Encoder and decoder question

    I prefer to use the RF modules for the HT12E and HT12D chips.
  11. Ogu Reginald

    What Can I do If Power Button Isn't Work In Portable Generator?

    Is the power button working? - - - Updated - - - Change the power button with any availablt SPST switch.
  12. Ogu Reginald

    inverter modified sine wave not work

    First, disconnect the battery and measure the voltage of the battery. Connect the battery back, power the inverter and measure the voltage of the battery. If you connect the cable that is used to charge the battery, is the buzzer still sounding? Give me a feedback.
  13. Ogu Reginald

    inverter modified sine wave not work

    What type of noise are you hearing? Try to explain the noise, hope is it not the humming of a transformer?
  14. Ogu Reginald

    sim900 soldering; How?

    Do you mean how to build your own SIM900 or do you mean how to connect the SIM900 to a PCB board.
  15. Ogu Reginald

    Mosfet selection for high ampere application

    Use 80N30 or IRF3205, both are good MOSFET.

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