To begin with, in this post for How to Charge a 12V Battery from a 12V Supply, this circuit uses 12V power and work like battery charger. Furthermore, it make voltage go higher than 12V to push current into battery and it also uses special parts and control transistors good so there is no overheat. […]
Stun Gun Circuit using IC 555
Stun Gun Circuit using IC 555 is simple electric device which make high voltage for non-lethal self defense. Remember, before making it we must know the danger and law rules to follow. Circuit Working: Parts List: Components Values Quantity Resistors 33k, 1k 1/4 watt 1 each Capacitors Ceramic 10nF, 100nF 1 each PPC 10nF 400V […]
Motor PWM Speed Controller Circuit using IC 555
Do we need to adjust the voltage control knob to change the motor speed? then this smart Motor PWM Speed Controller Circuit using IC 555 to control DC motor speed. Also, it turn motor power ON and OFF very fast so motor gets average voltage and its speed changes; like dimmer switch but for motor. […]
Simple Light Dependent Screamer Circuit
Fun small and Simple Light Dependent Screamer Circuit make sound change with light; it uses LDR like a special resistor which changes with light. Furthermore, as the light intensity increases, the sound becomes louder or higher in pitch, therefore, we call this circuit a Light-Dependent Screamer. Circuit Working: Parts List: Components Values Quantity Resistor 1k […]
Simple Ticking Bomb Simulator Circuit
This post is about a Simple Ticking Bomb Simulator Circuit, which make ticking sound like real bomb in movie or game. Also, this circuit is just for fun and with no real danger. Circuit Working: Parts List: Components Values Quantity Resistor 47k 1/4 watt 1 Capacitors Electrolytic 10μF 25V 2 Semiconductors IC 555 1 Speaker […]
Simple Metal Detector Circuit using IC 555
This is Simple Metal Detector Circuit using IC 555, uses IC 555 chip which works like small clock and makes signal to help find metal and magnet Also, it is easy to build and good for beginners. Circuit Working: Parts List: Components Values Quantity Resistor 47k 1/4 watt 1 Capacitors Electrolytic 10μF 25V 1 Electrolytic […]