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Amplifier Circuits

1.5V Audio Amplifier Circuit

Last updated on 1 June 2026 by Admin-Lavi Leave a Comment

A 1.5V Audio Amplifier Circuit is small circuit it makes sound signal more strong using only 1.5V battery; also this type of circuit is low power amplifier which is good for things that uses battery or when big power is not there or not needed. Circuit Working: Parts List: Components Values Quantity Resistors (All resistors […]

Filed Under: Amplifier Circuits, Battery Charger Circuits, Hobby Circuits

Transistor 2N3055 Circuit with 1.5 Million High Gain

Last updated on 31 May 2026 by Admin-Lavi Leave a Comment

Transistor 2N3055 Circuit with 1.5 Million High Gain is like normal volume knob it can make sound more but not too much and if we want very loud like 1.5 million we need to trick it little bit. One way uses two transistors together like a double volume knob. People also call this arrangement a […]

Filed Under: Amplifier Circuits, Hobby Circuits, Mini Projects, Transistor Circuits

Simple LM317 Audio Amplifier Circuit

Last updated on 30 May 2026 by Admin-Lavi Leave a Comment

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; […]

Filed Under: Amplifier Circuits, Audio Circuits, Hobby Circuits, Mini Projects

Public Address Amplifier Circuit

Last updated on 27 May 2026 by Admin-Lavi Leave a Comment

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 […]

Filed Under: Amplifier Circuits, Audio Circuits

Simple FET Preamplifier Circuit

Last updated on 26 May 2026 by Admin-Lavi Leave a Comment

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. […]

Filed Under: Amplifier Circuits, Audio Circuits, Mini Projects

Simple IC TDA2822 Stereo Audio Amplifier Circuit

Last updated on 25 May 2026 by Admin-Lavi Leave a Comment

Simple IC TDA2822 Stereo Audio Amplifier Circuit is small chip with stereo amplifier makes weak music sound go louder which is strong enough for speaker or headphone. However, despite using very little energy it still provides 250 milliwatts each side with good sound for small things like walkman, hearing aid or little stereo. So next […]

Filed Under: Amplifier Circuits, Audio Circuits, DIY Projects, Hobby Circuits, Mini Projects

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