How to Make a Simple Delay Timer Circuit Using Capacitor and Transistor?

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  • Опубликовано: 14 окт 2023
  • In this video, I will explain the working of the transistor timer circuit, also known as delay timer or turn on circuit, which is an example of a hobby electronic circuit that you can easily make on a breadboard and make using basic circuit elements such as BJT transistors, capacitors, LEDs, resistors and buttons. This example will be extremely useful in terms of better understanding the principle of BJT Transistor and capacitor working together. For a better understanding, I recommend that you consider the video as a whole and watch it until the end. If you watch the video until the end, you will better understand the logic of the capacitor's operation in DC. I will also show a simulation of this circuit with Proteus towards the end of the video.
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Комментарии • 35

  • @DesertVox
    @DesertVox 8 месяцев назад +5

    Simple circuits like this are good for beginners to easily understand where the current is going in the circuit, and what the role of the different resistors and capacitors are.

  • @larrybud
    @larrybud 4 месяца назад +3

    For the new guys in town: If you're going to replace the transistor with something, such as a 2n2222 or 2n3904, be sure to check the pinouts. BC547 is CBE while 2222/3904 is EBC

  • @rajiWickramanayake-yo5qo
    @rajiWickramanayake-yo5qo 5 месяцев назад +2

    Good explain

  • @haf-oq3vt
    @haf-oq3vt 8 месяцев назад +2

    Very clear my friend❤

  • @uttukruichy4994
    @uttukruichy4994 4 месяца назад +1

    thanks bro

  • @dhrubavideos
    @dhrubavideos Месяц назад

    Awesome, i am feeling like an engineer

  • @sargismartirosyan9946
    @sargismartirosyan9946 8 месяцев назад +1

    I LOVED IT LOVE THE EVERY Single BIT of the video pls PLSSSSS make a video about this.
    Transistor timer delay OFF circuit
    This was ON circuit can you show OFF pls 🙏 :)
    Btw I enjoyed so much the video

  • @RichmondNyamalor-yh4ch
    @RichmondNyamalor-yh4ch Месяц назад

    Good work

  • @prgayan5156
    @prgayan5156 3 месяца назад

    Hello. Do you know car start up scan LED strip. It normal function is when start the engine LED strip is turning on then automatic LED stip and stay turn on untill turn off the engine. Can we use this methode turn off LED strip automatically in few seconds after turning on the engine?

  • @Teenagegoogoomuk
    @Teenagegoogoomuk 6 месяцев назад

    Got a vid for a one shot after delay? need to time out then cycle one time after power up cycle?
    Basically bypassing a switch for one cycle ?

  • @zoranpetrovski3051
    @zoranpetrovski3051 8 месяцев назад +2

    Awesome

  • @RichmondNyamalor-yh4ch
    @RichmondNyamalor-yh4ch Месяц назад

    Can you please teach how a 555 timer ic works

  • @robertpoynton9923
    @robertpoynton9923 8 месяцев назад +1

    What if I wanted to charge a capacitor and have it discharge once it gets to 9 volts automatically?

    • @stark_energy
      @stark_energy 3 месяца назад +1

      You can use 555 IC and voltage divider.

  • @sargismartirosyan9946
    @sargismartirosyan9946 8 месяцев назад

    Nice also what's the simulation software name ?

    • @alnea
      @alnea 8 месяцев назад

      Proteus

    • @Comrade_YG
      @Comrade_YG 3 месяца назад

      @@alneais it free

  • @jamsheenav1014
    @jamsheenav1014 Месяц назад

    Can you make a circuit diagram of lighting led for 5 second on open circuit
    Please 🙏🙏🙏

  • @jumbo999614
    @jumbo999614 8 месяцев назад

    Instead of your finger on the push button, can we get output from other circuit as input to this delay circuit?

    • @DesertVox
      @DesertVox 8 месяцев назад

      I guess using another transistor like the BC547 to replace the push button.

    • @DigiLab360
      @DigiLab360 8 месяцев назад

      Yes, you can use the output of a microcontroller for example.

    • @sergiotricarico
      @sergiotricarico 7 месяцев назад

      Perhaps an optocoupler (given that are two circuits), just be sure that it will handle the current

  • @ioduremetallique
    @ioduremetallique 7 месяцев назад +7

    the button will quickly be out of service. (Because of the current peak when charging the capacitor)

    • @KarlOnSea
      @KarlOnSea 5 месяцев назад

      Agreed - with a similar set up powered by three AAA batteries, I measured the peak current at over 5A as the capacitor charges. So I've just designed a circuit with a MOSFET to charge the capacitor, and then the BJT to switch on the LED.

    • @larrybud
      @larrybud 4 месяца назад

      @@KarlOnSea Just put a resistor in series between the button an the + on the cap.

    • @davidbarrett7424
      @davidbarrett7424 3 месяца назад

      Would a suitable current limiting resistor in series with the switch fix it?

    • @allanpatterson7653
      @allanpatterson7653 2 месяца назад

      That first contact the Capacitor will discharge on its contacts max amperage. It is like hammering it.

  • @Redoxifiedguy
    @Redoxifiedguy 2 месяца назад

    which is the software he used for showing circuit demo????????????????????/🤔🤔🤔🤔🤔🤔🤔🤔

  • @neonblowfish
    @neonblowfish 3 месяца назад +1

    Shorting the power supply to common through the cap is a bad idea. You need to current limit that cap.

    • @khaozelectrichead
      @khaozelectrichead 3 месяца назад

      I didnt know that current flowed through a cap in dc. I guess it could fail with age.

    • @Dad-ij2qy
      @Dad-ij2qy 2 месяца назад +1

      Why ? It's a capacitor, not an LED. As long as you don't apply more volts than the capacitor is rated for, it will be okay.

  • @hkcccc2889
    @hkcccc2889 Месяц назад