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  1. M

    Hello, varactor(varicap) formula help

    THANK YOU A LOTTTTTTTTTTTT...........for helping ;-)
  2. M

    Hello, varactor(varicap) formula help

    Mr thank you, you say that at 2v measured is 19,8 or 22, or 24pf the maximum, and if is 1V is unkown because they dont write in datasheet sorry man, i dont know so much, i know diode when increase voltage decarse the capacitance if decrase voltage increase capacitance, i am a begginer, dont be...
  3. M

    Hello, varactor(varicap) formula help

    exist a formula, how can i know what is the maximum, when they say 19.2pf min to max 24pf
  4. M

    Hello, varactor(varicap) formula help

    Mr i have one more question, because to find minimum and maximum from one book for example diode Zetex 832A if c2 minimum = 22pf (c2/c20)= ratio = 5 so increase by factor 5 so 22pF/5 = 4.4pF this varies from 22pF TO 4.4 pF this say in the book bu after he write the maximum capacitance is...
  5. M

    Hello, varactor(varicap) formula help

    hi is ok i solved
  6. M

    Hello, varactor(varicap) formula help

    thank you very much................................i go buy the other varicap, because he told me is 500pF MAXIMUM thanks a lot
  7. M

    Hello, varactor(varicap) formula help

    i will meausure
  8. M

    Hello, varactor(varicap) formula help

    i am reading the book abc of varactor, and i wil like to know more about tuning with varicap
  9. M

    Hello, varactor(varicap) formula help

    yes is like that, but i take like example, but when you bias and apply voltage across, that change capacitance, i dont know how change
  10. M

    Hello, varactor(varicap) formula help

    i do some experiment, connecting varicap to measure, but i had no succses, but is strange i read datachet, let say 6 to 16pF is, he dont tell the maximum capacitance, but i will like to know how much is maximum capacitance, i buy one bb205G they say 16pF and FM/TV tuning
  11. M

    Hello, varactor(varicap) formula help

    hello can somebody help me how to measure maximum capacitance of varicap, or formula one example thanks
  12. M

    i need to find those variable capacitor

    thanks a lot to everybody, i solved....
  13. M

    i need to find those variable capacitor

    i work til only with variable trimmer and capacitor, i will try, i already try, i find it here https://www.rfparts.com/capacitors.html but i dont know wich is for me, of can you put more inductance and minder variable capacitor,
  14. M

    i need to find those variable capacitor

    hello two ganga find, but the other one can you help me to find, please,advice, i am in belgium
  15. M

    i need to find those variable capacitor

    hello i buy allmost all thing needed, for buil you own radio circuits 2013, but in electronics shop he told me , there are old, you can find it only in old radio he cant help, those components dont sell anymore, maybe somebody can help me how to find online those component VC1: two-gang...
  16. M

    Hello can somebody teach me how to connect am to arduino

    Merlin i fixit thank you for help
  17. M

    Hello can somebody teach me how to connect am to arduino

    myes, i did it with arduino, i read this books ARDUINO FOR MUSICIANS Mr thank you for help
  18. M

    Hello can somebody teach me how to connect am to arduino

    but you can tune with vc1 or varicap, so the adc is to convert your selected frequency to arduino? right
  19. M

    Hello can somebody teach me how to connect am to arduino

    Thank you this site is very good, ohhh i learn i forget, thanks for helping, i search al long to find radio receiver to connect in google, but i did not find, only with their module, and arduino with their modul i find easy...because i find a lot how to make receiver, BUT THIS WAS SOMETHING...
  20. M

    Hello can somebody teach me how to connect am to arduino

    yes if it is possible ;-)
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