This small and 1.2V NiMH Cell LED Flashlight Circuit works like supercharger inside flashlight. Normal flashlight with NiMH battery does not use full power from battery. But this circuit have special booster which takes low 1.2 volt and make it higher like 3.3 volt so LED can glow more bright. So we can use full […]
Simple Pulse Position Modulation Circuit using IC 555
This Simple Pulse Position Modulation Circuit using IC 555 uses one special chip with number 555. It works like messenger for your electronic things. It send info by making small burst like electric pulse. Not like Morse code with dot and dash but this one uses timing change of pulse to talk. Pulse strength and […]
Simple 3V to 9V DC Boost Converter Circuit
This Simple 3V to 9V DC Boost Converter Circuit is like a hero for battery. If battery is only 3V like from old remote then this circuit makes it strong by giving it 9V as many device need 9V to work good. So if we only have small battery with low power but still want […]
Simple Cell Phone Charger Circuit using 1.5V Battery
This Simple Cell Phone Charger Circuit using 1.5V Battery is one special charger we can take anywhere but there is no need to plug. We can charge phone anytime. It uses normal AA or AAA battery same like in TV remote. Inside, it have part which make weak battery power strong so phone can be […]
Simple LED Driver Circuit using IC 7555
Simple LED Driver Circuit using IC 7555 uses one special chip called as 7555 IC. People mostly use it for timing but here we have used for different way. It work like boss and control how electricity connects to LEDs. Chip make special pulse signal like square wave and this signal connects to transistor which […]
Simple LM317 Audio Amplifier Circuit
This Simple LM317 Audio Amplifier Circuit is a kind of like small trick for make speaker sound louder. LM317 chip usually is used to control voltage but here it works like small music booster amp. Not very strong amp but still help give little more sound from the music source. It can work, yes but […]