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DIY Hobby projects, diagram, schematic

Electronic Circuits

DIY Hobby projects, diagram, schematic

2 LED CMOS Flasher Circuit Diagram

electronicecircuits, January 14, 2011August 15, 2023
2 Two LED CMOS Flasher Circuit

Two LED CMOS Flasher Circuit Diagram

This is a simple 2 led cmos robot ( flasher, multivibrator ) circuit using CD4069 six inverter IC.

2 two LED CMOS Flasher multivibrator Circuit Diagram

PARTS LIST
R13.3MΩ
R2470Ω
C10.1µF (104)
D1, D2LED
IC1CD4069

Circuit Description

cd4069 six inverter cmos ic
CD4069 six inverter CMOS IC

Inverters IC1-a and IC1-b from a multivibrator and IC1-c is a buffer. Inverter IC1-d is connected so that its output is opposite that of IC1-c; when  pin 6 is high, then pin 8 is low and vice versa. Because pins 6 and 8 are constantly changing state, first one LED and then the other is on since they are connected in reverse. The light seems to jump back and forth between the LED’s.

The R2 resistor limits LED current. Depending upon the supply voltage used, the value of the resistor may have to be changed to obtain maximum light output. To change the switching rate, change the value of capacitor.

Two LED robot multivibrator circuitTwo LED Flasher Circuit Diagram

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Comment

  1. mokhlis says:
    January 20, 2011 at 8:04 pm

    thank for all the time to give me more detalse

    Reply

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