This cheap and easy Low Cost AM Radio Receiver Circuit uses simple parts to make. It helps us get normal AM radio signals. It uses 2N3904 transistor and LM386 amplifier to find and make AM signals louder. Circuit is good for beginners and people who want to learn about radio and electronics. We can also […]
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AM Radio Receiver Circuit using IC TA7642
TA7642 IC is very sensitive chip for AM radio. It needs few extra parts and works on low voltage. Circuit is good for small and efficient radios. In this post we will see AM Radio Receiver Circuit using IC TA7642. Here we have explained each part and have given easy steps to build. TA7642 is […]
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 […]
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 […]
Transistors Based Megaphone Circuit
Transistors Based Megaphone Circuit uses transistor like amplifier. Take weak sound from MIC and makes loud sound in speaker. It is used in public talk, sports, rally anywhere we need loud voice. The circuit have two TIP32 transistor in push-pull to boost sound. It work with 12V battery or 12V DC power. Circuit Working: Parts […]
Electromagnetic Telephone Ringer Circuit
Electromagnetic Telephone Ringer Circuit helps us know when call comes an when there is no need connect to phone line. This circuit is useful when there is no access or do not want to touch phone line. It works by sensing electromagnetic field from ringing signal and then buzzer turns ON. The circuit can run […]