Signal Injector Circuit is small tool for electronics, which send special signal inside the circuit; as this help to find problem or see where signal goes. People mostly use it in sound and radio circuits; however, they can also use it in other circuits. Circuit Working: Parts List: Components Values Quantity Resistors 100k 1/4 watt […]
Audio Circuits
Simple LM317 Audio Amplifier Circuit
This Simple LM317 Audio Amplifier Circuit is a kind of like small trick to make speaker sound louder; also this LM317 chip usually is used to control voltage but here it works like small music booster amp. Therefore, it is not very strong amp but still helps give little more sound from the music source; […]
3 Band Audio Equalizer Circuit
This 3 Band Audio Equalizer Circuit work like small knob to control the music and we can change bass with low sound, mid with voice and instruments and treble with high sound to make music how we like. So music can sound better for us by depending on type of music or room we are […]
Simple Rain Sound Effect Generator Circuit
This small and Simple Rain Sound Effect Generator Circuit it like a rain sound maker in box, as it uses electric parts to make sound and almost same like real rain drop. Also, this soft sound are good for many things like background music or sleep timer or help us in dreaming. So next time […]
Public Address Amplifier Circuit
This Public Address Amplifier Circuit works like a very strong loudspeaker for our voice! When we speak on microphone then it makes our voice go very loud because of that many people can hear us good. Hence, this circuit is good for big place like school, office, stadium or parties where we want all people […]
Simple FET Preamplifier Circuit
To begin with, this Simple FET Preamplifier Circuit works like super booster for small sound, as it uses special transistor, FET to make quiet sound go more loud. Also, this circuit is very good, because it uses two kind of transistors N channel FET and PNP bipolar, together they make sound strong and not bad. […]