In this article, I will explain How to Replace IC TDA2050 with LM1875 IC in Audio Amplifier Circuit. Many people use TDA2050 for 35W amplifier, but it is considered obsolete and has been discontinued by the original manufacturer but it might be available in online market as many user wants this IC for better sound […]
Amplifier Circuits
Transistor Based Audio Amplifier Circuit
A Transistor Based Audio Amplifier Circuit is a simple and useful audio circuit that increases weak audio signals into a louder sound signal. This circuit uses four transistors, namely two BC547 NPN transistors and two BC557 PNP transistors, because of its simple design, students and beginners can easily understand and build it. Moreover, this circuit […]
LM386 Amplifier Circuit with Bass Boost and Mini Audio Amplifier
This project uses a very old LM386 audio amplifier IC and is still one of the best beginner audio amplifier ICs for learning and DIY circuits, which increases the strength of weak audio signals with very few components, it provides enough output power to drive a small 4Ω or 8Ω speaker directly and because of […]
12 Watt Audio Amplifier Circuit using IC LF351
Audio amplifier is very important in sound system. It make weak sound strong for 8Ω speaker. A 12W amplifier uses IC LF351 and push-pull transistors. This 12 Watt Audio Amplifier Circuit using IC LF351 works on ±12V power and is good for small and medium speakers. Circuit Working: Parts List: Component Type Value Quantity Resistors […]
Headphone Amplifier Circuit using Transistors
Headphone Amplifier Circuit using Transistors make weak sound strong so headphones work well. This circuit is useful when sound is direct from source which is not loud or clear. In this post we talk about small 3V transistor amplifier for better sound. Circuit Working: Parts List: Component Type Value/Specification Quantity Resistors (All resistors are 1/4 […]
Temperature Controlled Fan Circuit for Audio Amplifiers
Amplifiers make heat when working. Too much of heat make it work bad and can die soon. This Temperature Controlled Fan Circuit for Audio Amplifiers keep amplifier cool. Fan starts only when amplifier is hot. If volume is low and less heat then fan stays OFF and saves power. The circuit is made with LM311 […]