Introduction
Every public addressing events use a microphone and speaker, as it is a necessary part of any public event. In many events, speakers just play music from any music player or mobile phone. So, if you are a beginner student of electronics or have an interest in electronic devices and circuits, then you must have thought that how the internal circuitry of this may work. Basically, these kinds of systems have amplifiers in them which amplify the audio signals coming from any device or human vocals. In simpler words amplifiers increase the low-power input electronic audio signals at the output. To understand how the basic amplifier works, in this tutorial, we are going to “Amplifier Circuit Diagram”
Hardware Required
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | IC | TBA810 | 1 |
| 2. | Speaker | 4Ω – 15Ω | 1 |
| 3. | Potentiometer | 100KΩ | 4 |
| 4. | Ceramic Capacitor | 0.001uF, 0.1uF, 680pF | 1, 1, 1 |
| 5. | Electrolysis Capacitor | 47uF, 100uF, 220uF, 470uF | 1, 2, 1, 1 |
| 6. | Resistor | 100KΩ, 15Ω, 47Ω, 100Ω | 2, 1, 1, 1 |
| 7. | Battery | 12v | 1 |
| 8. | 2-Pin, 3-Pin Connector | – | 3, 1 |
Circuit Diagram
Working Explanation
In this Amplifier Circuit, we are giving Audio signal input to the non-inverting pin 8 of an IC with the help of variable resistor VR1. This potentiometer is there to control the audio, The output is coming from the pin. We connect the other pins with some other elements like Resistor and capacitor. For protection, you can use a heat sink for the circuit. After completing the construction of the circuit choosing the power supply depends on the need for output power.
Application and Uses
- We can use it in electronic instruments like electronic keyboards and guitars.
- We can also utilize it in sound systems for various events.
- The circuit can be adopted in children’s gadgets and toys.
