Super Led Flasher Circuit


Posted on Apr 15, 2012

The super LED flasher is actually two complete LED flasher circuits on one circuit board. The first, LED flasher is made up of 1C1 and LEDs D1 and D2. IC1 is a 555 timer IC configured as an astable (free-running) multivibrator with its output on pin 3. The frequency of the 555`s oscillation is controlled by R2, R3, and CI. Resistor R1 limits the input voltage to a low enough level to prevent damage to the IC. As the 555 IC oscillates, the output of pin 3 goes high (+) then low (-). When the output is high it supplies current to Dl, which lights up. When it is low, pin 3 sinks current and D2 lights up. This happens because LEDs are polarity-sensi-tive (like all other diodes, they permit current flow in only one direction) and one lead of each LED has been connected to the respective polarity needed to light that LED.


Super Led Flasher Circuit
Click here to download the full size of the above Circuit.

The second LED llasher, made up of IC2 and LEDs D3 and D4, operates in the same way as the first LED flasher.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

30m Band CW-Transceiver
Smoke-detector
Stereo-indicator
all about wiring diagram
High Frequency Waveform GeneratorCircuit
working principles of motor control
Outdoor Garden LED Solar Light Circuit
AIR-FILTER SENSOR FOR HOME-USED AIR CONDITIONERS
Bus Description RS644 LVDS
pyro rf transmitter 27mhz
Based LB1948M drive motor control circuit diagram
Frequency sensitive rheostat for manual and automatic way starting circuit



Top