This simple amplifier shows the LM386 in a high-gain
configuration (A = 200). For a maximum gain of only 20, leave out the 10 uF
connected from pin 1 to pin 8. Maximum gains between 20 and 200 may be realized
by adding a selected resistor in series with the same 10 uF capacitor. The 10k
potentiometer will give the amplifier a variable gain from zero up to the
maximum.
 |
| 1 watt audio amplifier using LM386 |
- 5-9 Volt DC power supply
-
8 Ohm Speaker
-
Audio Source
-
IC1 IC LM386 Audio Amp IC
-
R1 Resistor 10 Ohm
-
R2 Potentiometer 10K Ohm
-
C1 Capacitor 220 Micro Farad
-
C2 Capacitor 10 Micro Farad
-
C3 Capacitor 220 Micro Farad
- C4 Capacitor 4.7 Micro Farad
- C5 Capacitor 10 Micro Farad
- C3 Capacitor 0.047 Micro Farad
- C3 Capacitor 0.1 Micro Farad
