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Recent content by purpleanger

  1. P

    I wanna Know about transistor equivalent circuit

    Hi. I wanna know about each case MOSFET equivalent circuit when mosfet is in ON and OFF. what is different each case? Thank you.
  2. P

    How to import PADS decal in layout window

    Hi everyone. I am beginner in PADS layout. I don`t know how to import decal(chip, resistor....) in layout window Thank you.
  3. P

    13.56 MHz RFID reader power

    What kind of equation between distance and reader power? or any relation of these? Thanks.
  4. P

    Using mosfet as a switch

    I wanna design the switch using the mosfet. gate voltage is about 2.5V. What kind of MOSFET can I use? Thanks.
  5. P

    14443 power limit at 13.5 MHz?

    Thank you for your answer. I found about transmitted filed strength limit for ISO 14443. That is Hmin = 1.5 A/m But I wanna know how can i get power degree ( as watt or dBm). Thank you.
  6. P

    14443 power limit at 13.5 MHz?

    Hello, I wanna know about 13.56 MHz 14443 transmit power limit. and also I wanna know relation between distance (between reader and transponder) and reader power. Thank you
  7. P

    monostable circuit design using 4060 IC

    I wanna design monostable circuit design using 4060 IC. and I want 3 second time period. any example of this circuit? Thanks for your help.
  8. P

    Time delay IC ( except lm555)

    I find the make monostable time delay IC. What kind of IC exist? (except lm555 IC) Thanks.
  9. P

    design a Time delay circiut

    Thank about your reply Kerim Tell me more information about that? please. Thanks.
  10. P

    design a Time delay circiut

    Hi, I'd like to design a circuit such that at first, the circuit is completely powered off. The user pushes a switch, which injects power into the circuit. Then a mechanism maintains the power active, even if the switch has been released. At a later about 3 seconds, when the circuit does no...
  11. P

    Turn off delay circuit

    Any other method, do not use 555 timer?
  12. P

    RFID tag microchip circuit

    I find 13.56 MHz RFID tag microchip internal circuit. I try my best, i did`t find it. Thank you.
  13. P

    Turn off delay circuit

    Hi, I'd like to design a circuit such that at first, the circuit is completely powered off. The user pushes a button, which injects power into the circuit. Then a mechanism maintains the power active, even if the switch has been released. At a later about 3 seconds, when the circuit does no...
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