If your design requires a constant-current LED, such as those in LED lighting or luminaires, then you may not need these advanced features. In these applications, a 555 timer can replace the ...

This voltage-booster circuit for driving one or more white LEDs uses a 555 timer as its main element (see the figure). The timer, IC1, functions as a resettable astable multivibrator ...

This is a small size led flasher built with the 555 timer IC that is powered from 2 x 1.5V batteries. The circuit can be used as a flashing metronome, ...