Light Sequencer 5 Channels 220V

This circuit controls five outputs at 220V. A potentiometer adjusts the speed, and a switch selects the effect (one direction or both directions). The circuit includes a divider by 10 (4017), a transistor oscillator (2N2646), the power stage, and the power supply. Each pulse on pin 14 of the 4017 advances to the next output in the order: 3, 2, 4, 7, 10, 1, 5, 6, 9, 11, and then repeats. If an integrated pulse is applied to pin 15, the sequence returns to pin 3. 1N4148 diodes prevent the return of power to the integrated circuit. Capacitors at the bases of BC548 transistors (47 µF) can be adjusted; increasing this value will allow the output to remain switched on and off more smoothly.

This circuit is designed to manage five 220V outputs, providing versatility through speed control and directional selection. The core of the circuit utilizes a CD4017 decade counter, which is configured to count pulses received on pin 14. The outputs are activated in a specific sequence, allowing for a range of applications such as lighting control or motor speed regulation.

The inclusion of a potentiometer allows for fine-tuning of the pulse rate, which directly influences the operational speed of the outputs. The switch enables the user to select between one-directional or bi-directional operation, enhancing the circuit's functionality.

The transistor oscillator, utilizing the 2N2646 transistor, generates the necessary timing pulses for the CD4017. The oscillator's frequency can be adjusted by modifying the components in the timing circuit, allowing for further customization of the output behavior.

To ensure reliable operation, 1N4148 diodes are employed to prevent backfeeding voltage into the IC, safeguarding against potential damage. The use of capacitors at the base of the BC548 transistors helps to smooth out the switching action, providing a more gradual transition between on and off states. The recommended value of 47 µF is a starting point; however, experimentation with larger capacitance values may yield improved performance in certain applications by prolonging the on-time of the outputs.

Overall, this circuit represents a practical solution for controlling multiple high-voltage outputs with adjustable speed and directional capabilities, suitable for various electronic and automation projects.This circuit controls five outputs 220V. Potentiometer change speed and a switch select effect (one direction or both directions). The circuit has a divider by 10 (4017), a transistor oscillator (2N2646), the power stage and power supply. Each pulse on pin 14 of 4017 advance to the next (the order is: 3, 2, 4, 7, 10, 1, 5, 6, 9, 11 - In that orde

r - and then repeat). If the integrated pulse is applied in pin15 back and resumes on pin 3. 4148 diodes prevent the return of power to the IC. Capacitors at the bases of transistors BC548 (47 µF) (but this value can be changed and should be tested) when higher the value output will remain switched on and off to turn off more smoothly. 🔗 External reference