How to Make an Amplifier

An amplifier's basic purpose is to increase the frequency of the hertz produced by audio waves. There are many different types of amplifiers designed for specific purposes; however, the most common type is the audio amplifier. You can build a simple audio amplifier by following these steps.


step1
Install the transistor to the base. You need to connect a NPN transistor to the solderless breadboard. The MPSW45A Darlington transistor is actually two transistors in one packaging that increases the amplification. You must connect the transistor at J27, J28 and J29. Then connect the jumper wires from I22 to I27 on the labeled grid on the breadboard.

step2
Divide the voltage. You must use transistors with the same ohm. Connect one 100,000 ohm resistor the positive side if the 9 volt battery. Then connect the other one to the negative side. This will cause the voltage to be split in half where the resistors meet.

step3
Connect the 100,000 ohm resistors and battery to the breadboard. You need to connect one resistor to the grid from H27 to H28. Then connect the other resistor to the grid from I28 to I29. You must install the negative side of the battery to F26 and the positive side to F34.

step4
Stop distortion. You need to install the 10,000 ohm resistor to stabilize the voltage and eliminate distortion in the sound. Connect it to the grid from G20 to F28.

step5
Set the wattage for the amplifier. This amplifier can handle 1 watt of power without over heating or draining the battery too quickly. You must install the 50 ohm resistor from I33 to I34 in order to regulate the watts.

step6
Hook up the speaker. You need to connect the speaker to the breadboard. Connect it from F29 to J33 on the grid.