Contact us

Music operated dancing LEDs Using NPN Transistor BC547


Availability: In Stock

  1. Microphone Module:
    • An electret microphone module captures sound and converts it into an electrical signal.
  2. NPN Transistor (BC547):
    • The NPN transistor is used as a switch. When a varying voltage is applied to its base (coming from the microphone module), it modulates the current flowing from the collector to the emitter.
  3. LEDs:
    • Multiple LEDs are connected in a visually appealing arrangement. The LEDs will light up in response to the modulated signal from the transistor.
  4. Resistors (R1, R2):
    • Current-limiting resistors (R1) are connected in series with each LED. Another resistor (R2) is connected between the base of the transistor and the positive voltage rail.

Product Description


There are no reviews yet.

Be the first to review “Music operated dancing LEDs Using NPN Transistor BC547”