Do it yourself
Life hacks, master classes, useful tips, recipes.
home » Electronics » How to make a powerful LED strobe using just one transistor
How to make a powerful LED strobe using just one transistor

Making a very powerful LED strobe light is quite simple; all you need is one transistor, a capacitor and a resistor. Yes, it won’t be difficult to find just three elements. Such a scheme can be done even by those who are absolutely vaguely familiar with electronics.
This low voltage lighting system operates from 9-15 Volts.

Will need


  • Super bright LEDs 1-20 pcs. -
  • Transistor BD139 or any similar -
    How to make a powerful LED strobe using just one transistor

  • Capacitor 2200 uF 25 V.
  • Resistor 1 kOhm.

Scheme


The scheme is as simple as day. The capacitor is charged through the resistor. As soon as the voltage reaches a certain threshold, the junction of the transistor opens and the capacitor is completely discharged to LEDs, giving them all the tension. Then the transistor will close and the cycle will repeat.
How to make a powerful LED strobe using just one transistor

The resistance of the resistor can be used to regulate the frequency of occurrence of light beams, and the capacitance of the capacitor can regulate their brightness.

Making an LED strobe light


Transistor pinout: emitter on the left, collector in the middle, base on the right, which will not be needed and will hang in the air.
How to make a powerful LED strobe using just one transistor

We solder the capacitor and for now there is one to check Light-emitting diode.
How to make a powerful LED strobe using just one transistor

Solder the resistor.
How to make a powerful LED strobe using just one transistor

We connect the 12 V power, plus to the resistor, minus to the connection of the capacitor with the LED. We check the work.
How to make a powerful LED strobe using just one transistor

Increase the number LEDs up to 4.
How to make a powerful LED strobe using just one transistor

It works, let's increase it further.
How to make a powerful LED strobe using just one transistor

The result is an excellent strobe light. There is more than enough brightness for a small room. The light pulse is short and clear, like a thunderstorm before rain.
How to make a powerful LED strobe using just one transistor

All that remains is to find or make a suitable housing and install all the parts into it to get a light installation at the output.

Watch the video


You can clearly see how the strobe works by watching the video:
come back
Comment
  • bowtiesmilelaughingblushsmileyrelaxed relaxedsmirk
    heart_eyeskissing_heartkissing_closed_eyesflushedrelievedsatisfiedgrin
    winkstuck_out_tongue_winking_eyestuck_out_tongue_closed_eyesgrinningkissingstuck_out_tonguesleeping
    worriedfrowninganguishedopen_mouthgrimacingconfusedhushed
    expressionlessunamusedsweat_smilesweatdisappointed_relievedwearypassive
    disappointedconfoundedfearfulcold_sweatperseverecrysob
    joyastonishedscreamtired_faceangryragetriumph
    sleepyyummasksunglassesdizzy_faceimpsmiling_imp
    neutral_faceno_mouthinnocent
4 minus one =
Comments (1)
  1. Victor
    #1 Victor Guests 1 December 2021 20:02
    0
    Good project. Can someone explain why Light-emitting diode doesn't burn? After all, we have it at about 3 volts, and in our circuit there are 12 volts and 25, but not 3.

How to defrost washer fluid in a tank with a homemade heater

Do it yourself - crafts and master classes | Page 250

How to knit mitts with an owl pattern | Do it yourself

Lifehacks and useful tips | Page 9 | Do it yourself

«Do it yourself - with your own hands» - a site of interesting homemade products made from scrap materials and items at home. Step-by-step master classes with photos and descriptions, technologies, life hacks - everything a real master or just a craftsman needs for needlework. Crafts of any complexity, a large selection of directions and ideas for creativity.

We recommend reading

Washing machine error codes