Stereo Tape Head Pre-Amplifier
The circuit is built around a popular Sanyos stereo head preamp IC LA3161. Low electrical signals from the playback heads are fed to pins 1 and 8 of IC1 via DC decoupling capacitors, respectively. Components between pins 2 and 3 and pins 6 and 7 provide adequate equalization to the signals for a normal tape playback.
12W Audio Amplifier Circuit TDA2006
Project is built around TDA2006 PENTAWATT package. TDA2006 provide high output current and has very low harmonic cross-over distortion. Further the device incorporate- rates an original (and patented) short circuit protection system comprising an arrangement for automatically limiting the dissipated power so as to keep the working point of the output transistors within their safe operating area. A conventional thermal shutdown system is also included. The TDA2006 is pin to pin equivalent to the TDA2030.
14W Stereo Audio Amplifier LM4730
14W Stereo audio power amplifier build around LM4730 IC. The LM4730 is stereo audio amplifier capable of delivering typical 14W per channel of continues average output power a 4 Ohms or 8 Ohms load.
This is easy to construct microphone pre-amplifier project using compact electret condenser microphone. The pre-amplifier is important building block of many audio communication systems. Circuit has been built around Op-Amp LM358.
20W Bridge Audio Amplifier
20W Bridge Audio Amplifier project, based on the TDA2005 IC, The TDA 2005 IC is class B dual audio amplifier, specifically designed for car radio applications etc.
Small Signal Amplifier (Pre-Amplifier) for Audio Signal
The Stereo small level audio signal amplifier has been developed to amplify the low level stereo audio signal, without changing other parameters of the waveform such as frequency and shape of the signal. Audio frequency amplifiers are used to amplify signals in the range of 20Hz to 20 kHz. These amplifiers are used to amplify the low level signals from microphones, ultra-sonic transducer and other audio signal source. The project amplify low level signal and then provide sufficient voltage level to drive power audio amplifier. Gain of the amplifier can be change by onboard preset. Circuit has preset at output to set the audio signal level.
6.5W Stereo Audio Amplifier
The 6.5W Stereo Audio Amplifier project built around TDA2004 IC. The TDA2004 is a class B dual audio power amplifier, specifically designed for car radio applications etc.
Mini Stereo Audio Amplifier TDA2822
Mini Stereo Audio Amplifier project is designed for portable radio players and other building block projects. It is based on TDA2822 IC.
Tiny Mic Pre-Amplifier
The Tiny Mic Pre-amplifier project is based on a single transistor. It amplifies the output of the electret condenser microphone. The project amplify low level signal coming from microphone and then provide sufficient voltage level to drive power audio amplifier. Good choice for Karaoke.
5 LED VU Meter project is based on LB1403/CH1403 IC from SANYO, which will indicates the volume level of the audio signal it senses.
Low Noise Hi-End Electret Microphone Pre-Amplifier
Audio Signal To Light Unit Using 200W Halogen Lamp
6W Audio Amplifier Circuit Using TDA2006
12W Audio Amplifier Using TDA2030
5W Stereo Audio Amplifier Using BA5406
6W Stereo Audio Amplifier
20W Audio Amplifier Circuit Using LM1875 IC
HI-FI Stereo Audio Amplifier Using LM1875 20W Output
Balance Audio Pre-Amplifier Circuit
Balance Microphone Pre-Amplifier