5%20LAMP%20LED%20FLASH%20DRIVER.gif "Sound Level Indicator")
This project uses an [[LM3915]] bar-graph IC driving two sets of ten LEDs for a 30dB range. The circuit is unique because it has an additional range of 20dB provided by an automatic gain control to allow it to be very sensitive to low sound levels but it increases its range 20dB for loud sounds. Link
Home 
博客 Electronics Sound Level Indicator
博客 Electronics Sound Level Indicator
Sound Level Indicator
|
|
This project uses an [[LM3915]] bar-graph IC driving two sets of ten LEDs for a 30dB range. The circuit is unique because it has an additional range of 20dB provided by an automatic gain control to allow it to be very sensitive to low sound levels but it increases its range 20dB for loud sounds. Link
内容的浏览数 : 2789706
