Objective:
Using a low voltage audio power amplifier to make a portable mini amplifier speaker.
Plans:
Making this portable mini amplifier speaker by using IC LM386N amplifier.
First, we need to get all of the components we need for doing this.
Then, drawing the circuit we need to construct on the schematic, which is shown below.
Next, we need to construct the circuit on the breadboard by using the components.
Finally, we can test this circuit by using the phone player as an input.
Components:
– (1) IC LM 386
– (1) 8 Pin DIP IC Socket
– (1) 3.5mm stereo jack female
– (2) 3.5mm stereo jack male
– (1) Resistor 10 Ohm
– (2) Ceramic Capacitor 0,01uF
– (1) Electrolit Capacitor 100uF
– (1) Electrolit Capacitor 220uF
– (1) Speaker 8 Ohm (0,5 – 0,6 watt)
– (1) 9 V battery
– (1) 9 V battery Clip
– (N) Wires
Changmeng Lin 