Day One Speaker Build
Let's build a very simple amplifier circuit to drive a speaker
Source: Hackaweek
Materials
- Breadboard, etc.
- Power supply or 9 volt battery.
- Capacitors 0.01 uf (103), 0.047 uf (473) (see Capacitor Code Chart or Capictor Codes
- Electrolytic Capacitors 10uf, 100uf, 220uf
- Resistor 10 ohm
- Variable Resistor10k ohm
- Jack and Plug
- 386 amplifier chip
Experiments: change the capacitor between pins 1 and 8
Add a bass amplifying circuit by feeding some lower frequency signal back through the amp