In this Tutorial, we are going to make a “50W to 60W Amplifier Circuit using 2N3055”. This circuit contains two circuits, the preamplifier circuit, and the power amplifier. So, before making the circuit, let us understand both circuits briefly.
Many novices hear this amusing term and wonder, What is a power amplifier? There is no doubt that a power amplifier is the most essential circuit in amplification devices. A power amplifier is a type of electronic amplifier created to boost the strength of an input signal. The input signal’s strength is boosted to a level that may drive several output devices, including speakers, headphones, RF transmitters, etc. A power amplifier is employed as the last part in an amplifier chain and, unlike voltage or current amplifiers, is meant to drive loads directly.
If you want a powerful amplifier with great, high-quality sound that is also economical, we advise utilizing the 2N3055-based 50-watt audio amplifier circuit. Because it uses components that are affordable, simple to understand, and easy to work with.
Hardware Required
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | IC | LM3900 | 1 |
| 2. | Resistor | 2.2K, 15K, 22K, 220K, 390K, 470K, 100 Ohm, 470 Ohm | 1, 2, 1, 3, 1, 1, 2, 1 |
| 3. | Capacitor | 0.47uF, 2.2uF, 0.001uF, 100uF, 2200uF | 2, 2, 1, 2, 1 |
| 4. | Speaker | – | 1 |
| 5. | NPN Transistor | 2N3055 | 3 |
| 6. | Diode | 1N5402 | 1 |
| 7. | Variable Resistor | 50K | 1 |
| 8. | Zener Diode | – | 1 |
Circuit Diagram
Working Explanation
This 50W power amp uses three 2N3055 transistors and an IC called LM3900 to support the device. When we provide input, we get the 50W at the output. The circuit 2N3055 Power Amplifier Circuit is what we choose, even though they are extremely old transistors, the sound is still quite nice and vintage. Hence, used widely and has always been relatively affordable.
Application Uses
- Consumer audio electronics
- Headphones
- Televisions
- Home theatre system, etc
