Tachometer is tool to check how fast motor shaft or disk spin. Speed is shown in RPM (revolutions per minute). This article for Measuring RPM with a Tachometer Circuit teaches us how simple tachometer circuit made, how it work and how to build it. Tachometer are used in many places like industry, car and lab […]
Designing a 20W Audio Amplifier Circuit using IC LM1875
IC LM1875 is nice audio power amp which works very good and is very efficient. It gives 20W power with few extra parts. The sound is clear with low distortion and is good for many audio uses. Circuit is good for small home audio, powered speaker, music instrument amplifiers. In this post for Designing a […]
Designing a 5-Band Audio Equalizer Circuit with IC LA3600
Graphic equalizer very useful in audio. It change volume of different sound parts to match what user like. 5-band equalizer split sound in 5 parts and user can adjust each part separately. LA3600 IC made for equalizer which is easy to use, strong and works well. This article for Designing a 5-Band Audio Equalizer Circuit […]
Audio Signal Distributor Circuit with Three Outputs
Audio Signal Distributor Circuit with Three Outputs is used to split one audio signal into three outputs with no sound quality loss. This circuit uses NE5532 op-amp and BC337, BC327 transistors. It send same audio to three outputs. The circuit is useful for sound system, headphone splitter or sending sound to many rooms. Circuit Working: […]
Voice and Music Audio Mixer Circuit using IC LM3900
This Voice and Music Audio Mixer Circuit using IC LM3900 is a voice and music audio mixer. It uses LM3900 quad op-amp. It take many audio inputs like mic signal and line audio and mix to one output. LM3900 IC is good choice as it give high gain and work with single power from +5V […]
Digital Volume Control Circuit using IC MAX5486
Volume control very important in audio technology. Digital way is more popular now and is very exact and works well. MAX5486 chip is made for digital volume control and its design is easy to make. This chip can adjust sound level clear and correct with digital signals. This article for Digital Volume Control Circuit using […]