LED dimmer circuit using 555 timer

Subscribe by email

scheme circuite electronice

This led dimmer circuit is based on a 555 timer circuit and require few external electronic parts . This LED dimmer circuit will adjust the brightness of one or more LEDs from 5% to 95%.
The brightness of the LED is determined by the on time vs. the off time of the square wave output.
This circuit is very simple and will not require any future adjustments, if you’ll turn the 50k potentiometer , the brightens of the led will be modified.

\/\/\/\/\/\/\/\/\/ View similar circuits /\/\/\/\/\/\/\/\/

555 timer circuit DC motor speed control
555 timer Capacitive sensor switch
LED dimmer circuit using 555 timer
Charger for NiCd batteries using 555 timer
Circuit Diagram: 
LED dimmer circuit using 555 timer


Which type of transformer you

Which type of transformer you are using ? Plz mention the specification


THIS CIRCUIT IS INCORRECT. One of the 1N4148 diodes MUST be opposite polarity of the other 1N4148 for the circuit to operate correcetly.

Post new comment

The content of this field is kept private and will not be shown publicly.
This question is for testing whether you are a human visitor and to prevent automated spam submissions.
Enter the characters shown in the image.