I don't understand this circuit diagram here, but I'm sure that you can help me out. I'll explain what I have figured out so far.
EDIT: It's a metronome circuit. Sorry for being unclear about that.
- In every circuit, current tries to connect "ground" (-) and "+9 VOLTS" in this situation.
- From the top down, 9 volts of current is waiting at the emitter side of Q2 (transistor). I'll get back to that.
- On the left, the voltage is tuned down a bit by the R1 , then after it is a variable resistor (R2).
I am lost here. I know that R2 controls how fast C1 charges, and I know that at a certain point C1 will trigger Q1 and Q2 to release the 9 volts (see 2). This 9 volt burst creates the clicking sound.
What I am confused about is:
- Why does C1 need to be directly connected to the speaker?
- Doesn't some of the current from R2 go to Q1?
- How does the capacitor discharge? I imagine that the capacitor will slowly charge up to a point, then let it out (presumably to Q1). When does it let out? Why does it stop it's "charging" routine to discharge?
- Doesn't Q1's base run straight to ground? Why is it going to Q2?