LED VU Meter 5LEDs CH1403 or LB1403 IC

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. Features  Power supply : 6 to 12 VDC @ 90 mA Lighting levels remain stable to line regulation because of on-chip voltage reference LED’s are driven by a constant current Onboard presets to adjust input sensitivity

Read more

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. Power supply : 5 ~ 9 VDC @ 2 mA PCB dimensions 26 mm x 56

Read more

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. Features  Power supply : Upto 12 VDC  Output : 1 W, 8 ?  for 12 VDC / 20 mW, 32 ? for 3 VDC  Input resistance 100 K?  Low crossover distortion, Low quiescent current  Berg connector for connecting

Read more

20W Bridge Audio Amplifier TDA2005

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. Specifications: Power supply input : 18 VDC Output power : 20 W, 4 Ω IC built in Thermal Shut-down, Load dump voltage surge protected Terminal pins for connecting left and right audio signal

Read more

Microphone Pre-Amplifier Based on LM358

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. Power supply : 5 to 12 VDC @ 10 mA Output: Gain Approx. 100 On-Board electret condenser microphone Header connector for connecting of power supply input and audio output

Read more

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 with less than 10% THD+N from  20Hz to 20Khz frequency. Each amplifier has an independent smooth transition fade-in/out mute and a power conserving standby mode which

Read more

12W Audio Amplifier Circuit Based On 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

Read more

Stereo Tape Head Pre-Amplifier Circuit

The circuit is built around a popular Sanyo’s 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. Specifications: Power supply: 9

Read more
1 52 53 54 55 56