we can create other toys. This one here.
The speaker is a device that mechanically vibrates upon receiving power. Using the electronic circuit, we simulated several peaks of energy use and the vibration coming from those peaks to create a visual effect that is quite interesting.
Step 1: Materials Needed:
- A transparent plastic bottle;
- Pieces of styrofoam (will popcorn);
- Q1 = BC548 or equivalent transistor (NPN transistor for general use);
- Q2 = BC558 or equivalent transistor (PNP transistor for general use);
- FTE = 5cm speaker 8 ohms or 4 (taken from a sound box pc, old);
- S1 = simple switch (contact switch removed junk);
- B1 = 3 to 6 volts;
- P1 = 1M ohm potentiometer;
- R1 = 10K ohm resistor (brown, black and orange);
- R2 = 1K ohm resistor (brown, black and red);
- C1 = 10 microfarads electrolytic capacitor to 12 volts;
Miscellaneous: Bridge terminal to make the connections, support for cells, button to the pot, wire, solder, etc..
Note: Resistors 1 / 8 Watt power.
The circuit was mounted on a terminal strip as shown. I think it's pretty clear that the design and will offer no difficulty to those who venture to make an equal.