•  
  •  

Light Flasher

- Naveen P N

This is a very basic circuit for flashing one or more LEDS and also to alternately flash one or more LEDs.
It uses a 555 timer setup as an astable multivibrator with a variable frequency.
With the preset at its max. the flashing rate of the LED is about 1/2 a second. It can be increased by increasing the value of the capacitor from 10uF to a higher value. For example if it is increased to 22uF the flashing rate becomes 1 second.

There is also provision to convert it into an alternating flasher. You just have to connect a LED and a 330ohm as shown in Fig.2 to the points X and Y of Fig.1. Then both the LEDs flash alternately.

Since the 555 can supply or sink in upto 200mA of current, you can connect upto about 18 LEDS in parallel both for the flasher and alternating flasher (that makes a total of 36 LEDs for alternating flasher).

If there are any problems please contact webmaster@electronic-circuits-diagrams.com

Please share & like

USED DAYTRONIC MAINFRAME 9005 W/ 9170 Strain Gage / 9141 / 9305A COMPONENTS
$39.99 USED DAYTRONIC MAINFRAME 9005 W/ 9170 Strain Gage / 9141 / 9305A COMPONENTS picture
HP/Agilent 8153A Mainframe with 81533A Optical & Head 81534A Return Loss module
$349.99 HP/Agilent 8153A Mainframe with 81533A Optical & Head 81534A Return Loss module picture
LECROY 1458 HV MAINFRAME VISYN
$999.99 LECROY 1458 HV MAINFRAME VISYN picture
JDSU TBERD 2000 Mainframe w/ VFL Visual Fault Locator PM Power Meter
$1899.99 JDSU TBERD 2000 Mainframe w/ VFL Visual Fault Locator PM Power Meter picture
VXI Technology CT 100B 6-Slot VXI Bus Mainframe
$574.99 VXI Technology CT 100B 6-Slot VXI Bus Mainframe  picture