Hi all,
I am currently building a vu meter with an LM3916 chip on a breadboard. I am using an electret mic with an LM386 chip for amplification.
When in "dot mode" multiple LED's still light up (they flicker actually) and it basically looks like bar mode. I'm fairly sure this is because the input is an AC signal, not a DC voltage. I tried to add a half wave peak detector (Figure 6 in the LM3916 datasheet), however now only the highest LED lights up.
Any help would be much appreciated
This is the basic circuit schematic I have been using (this does not include the peak detector): https://www.instructables.com/files/orig/FX5/67GS/FLROK12R/FX567GSFLROK12R.gif
LM3916 datasheet: https://www.electro-tech-online.com/custompdfs/2013/01/lm3916.pdf
LM386 datasheet: https://www.electro-tech-online.com/custompdfs/2013/01/lm386.pdf
I am currently building a vu meter with an LM3916 chip on a breadboard. I am using an electret mic with an LM386 chip for amplification.
When in "dot mode" multiple LED's still light up (they flicker actually) and it basically looks like bar mode. I'm fairly sure this is because the input is an AC signal, not a DC voltage. I tried to add a half wave peak detector (Figure 6 in the LM3916 datasheet), however now only the highest LED lights up.
Any help would be much appreciated
This is the basic circuit schematic I have been using (this does not include the peak detector): https://www.instructables.com/files/orig/FX5/67GS/FLROK12R/FX567GSFLROK12R.gif
LM3916 datasheet: https://www.electro-tech-online.com/custompdfs/2013/01/lm3916.pdf
LM386 datasheet: https://www.electro-tech-online.com/custompdfs/2013/01/lm386.pdf