DIY Stereo Amplifier Using TIP41 Transistor with Volume Controller

In this article we are going to learn how to make a Stereo Amplifier using T1P41 transistor with the volume controller. There are many audio amplifier electronic circuits using the transistors because of its convenience and shows many advantages in easy replacement, compatible, PCB friendly and made circuits easier than IC complexities. Well the DIY (Do-it-Yourself) stereo amplifier is basically a power amplifier which enhances and modulates the low power audio generated signals into high power frequency signals with best clarity and transmission property. The stereo amplifiers create best clarity sound then DVD, CD, USB Drive, or any other audio generating electronic device.

In this experiment of stereo amplifiers using T1P41 transistors we are using volume controllers also for frequency and signal modulation. So let’s go into the topic and explore it in depth.

Principle:

The principle and working operation of any amplifier is the same, first it receives an input signal from the source. The source can be any electronic device capable of generating audio signal for the frequency modulation like laptops, smartphones, TV etc. then the signal gets enlarged or modulated from the original size to other best clarity audio signal. This is the basic operation and working of stereo amplifiers using T1P41 in this to module the signal we have also used a variable volume controller (Potentiometer) also.

Components Required:

1. 2 Transistor T1P41
2. 1k Ohm Resistor
3. 100uF/50V Capacitor
4. 50k Potentiometer
5. Speakers
6. Terminal block
7. Source
8. Audio Jack
9. Heat sink (optional)
10. Power source voltage supply
11. Connecting wires

Step by Step Procedure:

1. Attach our T1P41 transistor to the heat sink

Insert both of transistors on the board and connect emitter terminals with each other (coupled)

Now connect collector and base terminals of the T1P41 with 1k Ohm resistor for both of the transistors

Place terminal blocks on the board and connect collector terminal with terminal block. Same for both of the transistors

Connect copper wire to the other terminals of the terminal blocks, as shown in the figure below (short circuit)

Place one more terminal block and connect one of its terminal to the emitter of 2nd transistor, as shown below short circuit the other remaining terminals

Take 50k Potentiometer use for the volume control of our electronic project

Connect the outer terminals of the potentiometer with connecting wire (short circuit)

Connect 100uF/50V Capacitor to the second terminal of both the transistors as shown in the figure below

Now connect audio jack input to the potentiometer terminals

Take 4 inch 2 speakers as shown in the figure below

Insert the input wires of the speakers in to the terminals blocks and connect it

Take one USB (Universal Serial Bus) connecting wire as shown in the figure below

Connect it and attach to the power supply board (plug it)

Insert audio jack pin to the source (laptop, smartphone or any other electronic devices)

Now we have successfully created our DIY stereo amplifier using T1P41 with the volume controller. To adjust signal modulation of signal frequency.

If you are unable to find the transistor T1P41 then you can also use the replacement of it.

BD705, T1P41B, T1P41G, BDT41B

The equivalent part number of T1P41 is T1P42C

Conclusion:

The Stereo amplifier is providing best quality and clarity sound amplification with volume control specification. So what are you waiting for, start making your own project amplifier now.