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12 Volt LED Flasher using BC 547 and BD139 Transistor

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  • Опубликовано: 4 авг 2019
  • Components
    1)BD 139
    2)BC 547
    3)10 uf capacitor
    4)100uf capacitor
    5)10 k X 2 Resistor
    6)1 k Resistor
    7) wire
    8)PCB
    click the link for circuit diagram :-
    drive.google.c...
    Thanks for watching

Комментарии • 20

  • @bharathchandrasenan2428
    @bharathchandrasenan2428 3 года назад +1

    Good work keep it up 👍🏻

  • @Dominar-gu4zq
    @Dominar-gu4zq 4 года назад +1

    Thanks @Hobby project .it worked perfectly

  • @rossbrumby1957
    @rossbrumby1957 3 года назад

    I have 24 LEDs from a tv backlight, wired in series and parallel to be 12v. (3v per LED) powered with 3×18650 lithium batteries in a holder (12v). What size components will I need to operate these? I'm making a larger, brighter rear light for a recumbent trike (4×6")

  • @anandhusuresh8078
    @anandhusuresh8078 5 лет назад +1

    Thanks it works

  • @prasantasaha5871
    @prasantasaha5871 3 года назад

    I use 2.16k resistor instead of 1k,,it works,,,but when I use 1k resistance,, little bit heat hasben occurred in 1k resistor,,,
    Is there any prob of use 2.16 resistor??

  • @gzw353228652
    @gzw353228652 3 года назад

    A very useful video for my project, but how you calculate what value of capacitors you use for example if I want to on 1 second and off 1 second

  • @sudheeshkumarvs6557
    @sudheeshkumarvs6557 4 года назад +1

    Supper bai

  • @ajiths4880
    @ajiths4880 5 лет назад +2

    👍👍👍

  • @prasantasaha5871
    @prasantasaha5871 3 года назад

    Is it working in a car warning light battery output 2.5 amp,12 volt

  • @asifalikhan8677
    @asifalikhan8677 4 года назад

    @hobby project .. I made it and it was working fine with low power led but when I connect higher power BD139 burnt... Can you recommend any cheap replecemnt with 3A range ? Because I checked it can only handle 1.5A

    • @akshayviruss
      @akshayviruss 3 года назад

      Use relay instead of direct load. Actuate the relay with the transistor and connect load to the relay. That way you can control much higher load.

    • @asifalikhan8677
      @asifalikhan8677 3 года назад

      @@akshayviruss adding relay will increase the size ... I am looking for cheap replacement

    • @akshayviruss
      @akshayviruss 3 года назад

      @@asifalikhan8677 you can opt for SSR which are a bit higher on price but are much smaller

  • @sujoymojumdar7993
    @sujoymojumdar7993 4 года назад +1

    Vai capacitar ka volt kitna vai .....o bolie pleasee

  • @gokulg5124
    @gokulg5124 5 лет назад +1

    Video idunnathinu oru time fix cheyyeda🤓

    • @hobbyproject
      @hobbyproject  5 лет назад +1

      Ok. Thank you for your valuable suggestion

  • @binsafeersupermarket969
    @binsafeersupermarket969 2 года назад

    not good flash led ligh