Flashing LED unit


Posted on Feb 6, 2014

The circuit given here is designed as an LED flasher which produces a rotating effect when the LEDs are arranged properly. The circuit has very low current consumption and can be operated from even 3V button cells. The IC 1 (CMOS NE555) is wired as an astable multivibrator wired at a duty cycle of 50% and 4Hz frequency and drives LEDs D1 to D6. The


Flashing LED unit
Click here to download the full size of the above Circuit.

second IC, IC2 (CMOS NE555) is working as a trigger pulse inverter and drives LEDs D7 to D12. The circuit is arranged such that the ICs sink the current consumed by the LEDs. At low operating voltages like 3V, the CMOS NE 555 performs better when arranged in sinking mode rather than in sourcing mode. The LED D13 remains permanently ON.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

FM Stereo Transmitter with BA1404
Remote ring extender switch
Simple JFET Preamp
laser communication
Mains Remote-Alerts
Stormwise VLF Radio Electronic Project
Temperature control circuit diagram with three-wire serial interface smart temperature sensors DS1620
Color display circuit
Simple Valve MW Transmitter circuit 30W



Top