I am new to making circuits and electronics so hopefully some of the experts on here can help me
I am trying to build a sound reactive vu meter with the lm386 and lm3914 but I am having trouble with the lm386 and getting it to work with an electret microphone.
When I measure the voltage output of pin 5 from the lm386 I get a constant voltage that doesn't change with different sound levels. Another thing I don't fully understand is what else I need coming off of pin 5 from the lm386. I know I am probably missing some other stuff for the amp so hopefully someone can help me with that.
I have attached the schematic I used to test the lm386 and the schematic with the lm3914. When I know the values the lm386 makes I will calculate what I need for the lm3914 with this awesome tool.
Microphone datasheet: https://www.electro-tech-online.com/custompdfs/2012/02/wm-62c.pdf
Thanks!
I am trying to build a sound reactive vu meter with the lm386 and lm3914 but I am having trouble with the lm386 and getting it to work with an electret microphone.
When I measure the voltage output of pin 5 from the lm386 I get a constant voltage that doesn't change with different sound levels. Another thing I don't fully understand is what else I need coming off of pin 5 from the lm386. I know I am probably missing some other stuff for the amp so hopefully someone can help me with that.
I have attached the schematic I used to test the lm386 and the schematic with the lm3914. When I know the values the lm386 makes I will calculate what I need for the lm3914 with this awesome tool.
Microphone datasheet: https://www.electro-tech-online.com/custompdfs/2012/02/wm-62c.pdf
Thanks!