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Recent content by Hz2020

  1. Hz2020

    Discontinuous conduction mode of buckmode converter: weird waveform problem

    To prevent this dead zone , u must be in a continuous mode. This simply can be achieved by increasing the filter inductance or increasing the switching frequency or both.
  2. Hz2020

    24C04, 24C64 and 24C256 EEPROM interfacing problem

    Hi, ark5230 I want to tell u that the problem is not in the device addressing (The device addressing is the same) But the problem is in that in the 24c64 ........ the address of the location to be read or written is two bytes. But in the 24c04 ........ that address is only one byte. u can use...
  3. Hz2020

    If anybody need help in EAGLE, ask me in this POST !

    Re: eagle drill chart Hi, Guys i want to put some components in the bottom layer in my PCB (i use eagle software). Can i make that just by mirror the component ? or there is another step beside that? Are there a difference between placing the (DIP components or Resistors etc.) and the (SMD...
  4. My SMD Soldering Tools

    My SMD Soldering Tools

  5. SMD soldering

    SMD soldering

  6. MOSFET H Bridge Driver Circuit

    MOSFET H Bridge Driver Circuit

  7. MOSFET H Bridge

    MOSFET H Bridge

  8. 4x4 Keypad decoder circuit

    4x4 Keypad decoder circuit

  9. PCBs

    PCBs

    My PCBs
  10. Hz2020

    24C04, 24C64 and 24C256 EEPROM interfacing problem

    1st i would tell u that u can easily interface the ATmega32 with the 24C04 through the I2C bus. About the address the address pins in each ic is set by u to make the total address of the device (the EEPROM) and then u must send that address to the device and the device will acknowledge these...
  11. Hz2020

    Using scope for non ground referenced voltage measurements?

    yes, u can put a scope probe across this sense resistor. The important note is that when u use the second channel of your scope, u must connect the reference of the probe (the crocodile) to the crocodile of the 1st probe or u can left it unconnected (as there are internally connected together)...
  12. Hz2020

    [SOLVED] how to protect mosfet from inrush current

    u can also use NTC resistors that has a high resistance in the starting condition
  13. Hz2020

    Analog to digital converter (ADC)

    u can use MT8870D Integrated DTMF Receiver it is very easy to make that project with that ic and it is cheap Regards, Hz
  14. Hz2020

    Attiny85 Programming

    u can easily program it through the isp programmer (usb asp), just connect the pins of (MOSI, MISO, SCK, RESET, VCC, GND) of the Attiny85 to the similar pins in the programmer u should make a project and compile it and build it then the hex file will be generated. the default setup is ok. I...
  15. Hz2020

    How to release ferrite transformers without break it

    will that affects on the bobbin ? will it get melted ?

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