Description
This circuit basically the base of LED Flashing circuit. It works on the principle of charging and discharging of capacitors C1 and C2. Current from the positive of battery flows through first set of LEDs D3,D4,D5,D6,D7,D11,D12 to the collector of T2 through resistor R2,R4,R6. Resistor R2,R4,R6 limits current through the LEDs to protect them. The current through R2,R4,R6 charges capacitor C1. It then discharges through the base of T1 and resistor R9. This gives base current to T1 and it conducts. As a result second set of LEDs D1,D2,D5,D6,D9,D10,D13,D14 lights as the current flows through T1.Capacitor C2 again charges and the cycle repeats. The D1,D2,D5,D6,D9,D10,D13,D14 are red leds and D3,D4,D5,D6,D7,D11,D12 are the green leds. These LED flasing alternetly and gives dancing effect.
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