Dial-controlled Speaker with 556 timer
Schematic:
(in schematic, capacitor is 10uF, not 1010uF)
Schematic:
(in schematic, capacitor is 10uF, not 1010uF)
Actual thing in action:
img_0714.mov |
How it works:
The dial is a variable resistor.
The dial is hooked up so that it controls the off time.
The 660 ohm resistor is hooked up so that is controls the on time.
As the dial turns, the off time changes.
The dial is a variable resistor.
The dial is hooked up so that it controls the off time.
The 660 ohm resistor is hooked up so that is controls the on time.
As the dial turns, the off time changes.