How to Make FM Radio Circuit
Contents
In this article, you will learn how to make an FM radio circuit easily at home. This FM radio circuit is highly efficient with a clear audio output. You can adjust the frequency to any required frequency of FM station. This circuit is capable of producing the loud sound which is better than commercial radios.
FM Radio Circuit Diagram:
You can find the other FM receiver circuit here.
Components Required:
- TA2003P AM/FM Radio IC
- LM386N-1 Audio Power Amplifier
- 2 x 104PF
- 2 x 27PF
- 47PF
- 103PF
- 10PF
- AM/FM Tuning Variable Capacitor
- 10K Resistor
- 4.7E Resistor
- 10K Linear Potentiometer
- 2.2uF Electrolytic capacitor
- 2 x 100uF Electrolytic capacitor
- 4.7uF Electrolytic capacitor
- 10uF Electrolytic capacitor
- 10.7MHz Ceramic Filter (2Pin)
- 10.7MHz Ceramic Filter (3Pin)
- 4 Pin Relimate Header Connector & Cable
- Male Header Connector
- 22 AWG Copper Wire
- Plastic Shaft With Holder
- 2 x 4mm Screws
- 2 x Potentiometer Knobs
- 9v Battery & Connector
- Heat Shrink Tube
- 2 Inch 8 Ohm 5W Woofer
Working of FM Radio Receivers:
FM radio uses frequency modulation. To understand frequency modulation, consider a signal with a steady frequency and amplitude. The frequency of the signal in unchanged or un-modulated, so there’s no useful information contained. But once information has been introduced to this signal, the combination results in a change to the frequency, which is directly proportional to the information. When the frequency is modulated between low and high, music or voice is being transmitted by the carrier frequency. But only the frequency changes as a result; the amplitude remains constant the entire time. FM radio operates in the range of 87.5 MHz to 108.0 MHz.
Find out more about working of FM Radio
FM Radio PCB Layout:
Top View:
Bottom View:
Download FM radio circuit, and PCB layout
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