LED Chaser using 4017 and 555 Timer - PCB

LED Chaser using 4017 Counter and 555 Timer

Introduction A simple LED chaser hobby circuit can be made using 555 timer and CD4017 counter IC. You can use this circuit for decorative purposes. By modifying the circuit in a proper way, you can even use this to control lights working on AC mains. Components RequiredCD4017 Counter IC – 1 555 Timer IC – 1 LED – 11 680Ω Resistor – 11 10KΩ Resistor – 1 10KΩ Variable Resistor – 1 10μF Capacitor – 1 0.01μF Capacitor – 1 9V Battery / Power Supply – 1Circuit Diagram LED Chaser using [...]


CD4017 Decade Counter with 10 Decoded Outputs

The CD4017 is the one of the most popular Decade Counter (Divided by 10 Counter). It is a 5 Stage Divide by 10 Johnson Counter with 10 Decoded outputs. It has a wide supply voltage range from 3V to 15V and is compatible with TTL. It has a medium speed of operation, typically 5Mhz. Its applications includes industrial electronics, remote metering, automotive, medical electronics, instrumentation and alarm systems. CD4017 Pin DiagramCD4017 Pin Diagram The above diagram shows the pin out of [...]