This video is a tutorial on how to make a simple flashing/blinking LED lights circuit using transistors on a breadboard. Changing the flashing rate is also possible by changing the value of capacitor used, which is shown later in the video.
The components required to build this circuit are:
1 npn transistor (BC547)
1 pnp transistor (BC557)
Resistors: 22R, 1K, 1M
Capacitor: 2.2uF
Breadboard
Few Breadboard Connectors
Power Supply: 6V
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