3
votes
3answers
113 views

Controlling LED with microphone input

I know this is an extremely simple question, but I haven't been able to figure this out on my own. I'm trying to get an LED to get brighter as ambient sound rises. What I've come up with: use a ...
7
votes
2answers
4k views

How does an astable multivibrator LED blinking circuit work?

I am beginner to electronics. I come to know about oscillator using RC circuits (Capacitor charge and discharge and time constant tells the behavior of circuit). Then I saw following circuit that ...