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Recent content by midhun raveendran

  1. M

    Microcontroller (pic) based isolated power supply

    I am trying to make an isolated power supply.. The spec is as follows... Vin---Line voltage----90 to 265 volt RMS, 50Hz, Vout: 16V Iout: 15A, Converter: Flyback, Switching freq: 100KHz, Please help me on transformer design, Snubber design...
  2. M

    [SOLVED] SWITCH MODE ARC INVERTER WELDER SCHEMATIC

    Can i please get the details of the transformer which gives 130Amps output.. I need to make one so i need the details like which bobbin, winding details etc..
  3. M

    hi!Does anyone know how to write code sending sms after reply OK on at89c51????

    Hi, MAX232 is already connected to the controllers serial port know?? If so u just need need to write a code for sending SMS. Use the command AT+CMGS.
  4. M

    MOSFET H-bridge with PIC16F876A

    Provide a block diagram so that your requirement can be easily analysed. PIC can be easily coded for controlling a H-Bridge converter. I think you may need current sensor that senses the current and provide a feedback for the controller, so that you can have a control over the load.
  5. M

    Pic18f4550 boot-loader and driver

    I need to connect PIC18F4550 to my PC through USB port. As this PIC is having dedicated USB port i need to make use of that. I loaded the boot-loader to the device. I used MCHPUSB.hex file. My device is connected to 20MHz crystal. I got the driver from"...
  6. M

    [SOLVED] WI-FI based device controlling system.

    IT is so simple switch on and switch off your cell.
  7. M

    Doubts on finding frequency

    I am having some doubts about finding the frequency of a signal. For a sine wave we can count the no: of cycles per second...(1 cycle=1 +ve cycle+ 1 -ve cycle). but there will be signals that will have only +ve or only -ve or irregular non uniform signal with +ve and -ve cycle at different...
  8. M

    WI-FI based device controlling system.

    THANKS for your valuable reply....
  9. M

    information related opamp

    1: An op amp tries to make the -ve terminal voltage equal to the +ve terminal voltage. If you tries to analyze the non-inverting amplifier you can see a potential diveder at the output of the op amp to the ground via the -ve input terminal. while the op amp try to make the input terminals...
  10. M

    [SOLVED] WI-FI based device controlling system.

    I need to make use of WI-FI in my android based cell phone. how to make an application program that can be installed in my phone, that can access the wi-fi of the phone. and how can i decode the same that has been sent using wi-fi from my phone. Please guide me. Thanks in advance.
  11. M

    WI-FI based device controlling system.

    i need to make use of WI-FI in my android based cell phone. how to make aWI-FI? Please guide me. Thanks in advance.
  12. M

    circuit simulation software for 8051 microcontrollers

    Better go for PROTEUS. it will meet tour requirements.

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