Just imagine your voice is like a tiny whisper when it enters a microphone. This microphone preamp circuit made with just two transistors, is like a small megaphone. It boosts that whisper into a much stronger signal before it goes to the main amplifier making your voice loud and clear. Circuit Working: Parts List: Component […]
Amplifier Circuits
How to Convert a Speaker into a MIC Circuit
Instead of the speakers coil, this mic circuit uses the speaker itself to pick up sound waves. These sounds turn into a very faint electrical signal. Then, a special circuit with transistors boosts this weak signal to a stronger one we can use. This microphone will not be the best, but it is a fun […]
How to Make a Simple Op-Amp Circuit
Presume you have two whispers, one a little louder than the other. An op amp is like a super listener that can focus on the difference between those whispers. It ignores the quiet background noise electrical noise and boosts just the part you want to hear the voltage difference. Because it is so precise and […]
Simplest Two Transistors Amplifier Circuit using 1.5V Battery
This circuit is like a megaphone for tiny sounds. It uses just two transistors like tiny electronic switches and a 1.5V battery to boost a faint signal making it much louder. This is a basic way to build a mini amplifier for simple projects, like listening to music a little bit better. Circuit Working: Parts […]
Simple 1.5V Audio Amplifier Circuit
A 1.5V audio amplifier circuit is a circuit that amplifies audio signals using a power supply of 1.5V. Such a low voltage amplifier is often used in battery powered devices or applications where a higher voltage supply is not available or desired. Circuit Working: Parts List: Type Value Quantity Note Resistors 20k 1 1/4W 10k […]
Simple LM317 Audio Amplifier Circuit
This LM317 audio amplifier circuit is like a secret hack for your speakers. The LM317 chip is normally used to control voltage, but in this circuit it acts like a simple amplifier booster for your music. It is not the most powerful amplifier out there, but it is a clever way to get a little […]