Page 48 - Electronics Starter Kit_EN

Wiring diagram

11.5 Circuit Explanation

We have two capacitors in this circuit so the circuit will charge and discharge them to make the
RGB LED flashing, to understand how this circuit works let's suppose that C1 is already charged
and C2 is empty, C1 connected to the base of TR1, so this capacitor will make the transistor
(TR1) in the saturation mode and Green LED will light up.

At the same time C2 will recharge, it will get the positive side through R2 and will get the
negative side through TR1.

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