12 led vu meter circuit


Posted on Feb 6, 2014

This is a simple visual indication of the audio level signals, adaptive to various user needs. Can be adapted to different input levels, adjustable by trimmer TR1 (state) - TR2 (Gain), then rectified by diodes D1-D2 (standard negative mark-recovery periods) and driven in the main circuit indication, consisting of


12 led vu meter circuit
Click here to download the full size of the above Circuit.

the diodes D3 up to D13, transistors Q2-Q13 and materials that exist around them. The visual indicator is taken from the series of diodes LED LD1-13. Each Led illuminates when the level changed during about 0, 65 V. The power requirements are 100 ma full term. We can add as many steps we want LED, always assuming the power where you need the new LED.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

LED mood Lamp with PIC16F628
60W audio amplifier (2N3055)
Varactor-tuned 10 mhz ceramic resonator oscillator
Ultra-precision-instrumentation-amplifier
float charger for nimh cells
Battery charging indicator circuit
Lm3485 Led Demo Board
Remote Control Mains Switch
Low cost temperature data logger using PIC
Based LT3756 buck - boost mode drive circuit diagram
No inductive analog relay circuit



Top