The IC 555 astable multivibrator is a configuration where the IC 555 output continuously switches between an ON state and an OFF state at a given frequency, determined by its […]
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Visitor Counter Circuit Using IC 555 and IC 4026
A visitor counter is a machine that counts the of number people who visited a place. Visitor counters are usually installed at the entrance and exit points of commercial buildings […]
Automatic School Bell System Using IC 4017 and IC 555
In this post we are going to construct an automatic school bell system using the IC 4017 which can be programmed to activate an AC bell in regular intervals (between […]
IC 555 Siren and Alarm Circuits
In this post we will learn how to configure IC 555 astable circuit to create various siren and alarm sound effect generator circuits The versatile astable multivbrator configuration of IC […]
10 Simple IC 555 Monostable Circuits Explored
In this post we will learn how IC 555 can be used for making 10 different types of monostable multivibrator circuits, such as one-shot type, debounce preventor, retriggerable type, touch […]
7 Easy Sawtooth Waveform Generator Circuits using UJT, IC 555, and Transistors
In this post we learn how to build 7 types of easy sawtooth generator circuits, using BJTs, UJTs, and IC 555. In a sawtooth waveform the voltage increases slowly in […]