This project is Simple Traffic Signal Lights Circuit using IC 555. It uses 555 IC and LEDs to show traffic signal lights in sequence. The circuit is simple to build and parts are easy to find. Circuit Working: Parts List: Category Description Quantity Resistors 470Ω, 100k, 47k 1/4 watt 1 each 220Ω 1/4 watt 2 […]
Simple Hulda Clark Zapper Circuit using IC 555
Simple Hulda Clark Zapper Circuit using IC 555 make electric current with set frequency for healing. It uses IC 555 chip. This type of circuit are also called Hulda Clark zapper which was made in 2003. Circuit Working: Parts List: Category Description Quantity Resistors 1k, 3.3k 1/4 watt 2 each Capacitors Ceramic 4.7nF 1 Ceramic […]
Simple Machine Gun Sound Generator Circuit using IC 555
This project for Simple Machine Gun Sound Generator Circuit using IC 555 which makes circuit like machine gun sound, short and fast bursts. 555 chip give quick electric pulses and controls the sound timing. Pulses turn into sound and make “rat-a-tat-tat” noise. Want loud sound? Easy! Add amplifier and make sound big and strong. Circuit […]
Simple Morse Key Circuit using IC 555
This article show how to make a Simple Morse Key Circuit using IC 555, which is an easy circuit and is good for Morse code practice. IC 555 can work in many ways, in this project it work as astable multivibrator which means it make signal by itself and there is no need for outside […]
Wailing Siren Circuit using IC 555
A Wailing Siren Circuit using IC 555 is simple to make sound like real siren, going up and down in pitch. The sound come from 555 IC making pulses at certain speed (frequency). Circuit Working: Parts List: Category Description Quantity Resistors 390Ω, 1k, 220k, 100k, 33k, 22k 1/4 watt 1 each Capacitors Ceramic 10nF 2 […]
How to Charge a 12V Battery from a 12V Supply
In this post for How to Charge a 12V Battery from a 12V Supply, this circuit uses 12V power and work like battery charger. It make voltage go higher than 12V to push current into battery. It uses special parts and control transistors good so there is no overheat. It give safe charging current around […]