How does a FM radio receiver work?

The receiver uses electronic filters to separate the desired signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation. Of the radio waves, FM is the most popular one.

How do I turn an old radio into an FM transmitter?

How to Make a Radio Into an FM Transmitter

1. Make sure that your radio has an “auxiliary” out or a headphone port.
2. Obtain an FM transmitter from your local electronics store.
3. Power on the transmitter and select an FM station that your transmitter will broadcast to.
4. Tune the FM radio to the station you selected.

How do you make a RF transmitter and receiver circuit?

Step 1: Parts List

1. RF transmitter and RF receiver of 433 Mhz.
2. 3 push buttons.
3. IC HT12D.
4. IC HT12E.
5. Hearders (male or female it doesn’t care)
6. 3 resistors with a value from (100 to 330) ohms.
7. 3 leds any color 3mm of diameter (miniature)
8. 1 Megaohm resistor for IC of the transmitter (IMPORTANT)

Why ferrite core is used in radio receivers?

In the coil, a low-loss, high-magnetic-permeability ferrite core is used that is stable against thermal fluctuation. The system can receive weak radio waves and can be used for several years without battery replacement because a small but high-performance ferrite core is used.

Can a radio receiver be turned into a transmitter?

Nope, that doesn’t readily work. A radio takes a weak RF signal and turns it into a more powerful audio signal. A transmitter takes a weak audio signal and turns into into a more powerful RF signal.

How does a small FM radio receiver work?

The circuit works off a small 4.5 volt battery or two 3.6 volt Lithium button cells. The fm receiver section has two RF transistors T1 and T2 to detect the Frequency Modulated signals.

Which is the best FM radio receiver circuit?

The first is a very old circuit, using only transistors. And the other one, using IC chip. Even both circuits are small FM radio receiver circuit. But works well, although the sensitivity is poor. This circuit is suitable for learning only.

How many pins are in an FM radio circuit?

FM Radio Circuit Design: The FM Radio circuit mainly consists of LM386 IC. This is a low voltage audio power amplifier. It has 8 pins.

How does a Micro Power FM radio circuit work?

The signals are capacitor coupled through C2. 10K preset VR controls the volume to the input of the amplifier. IC1 is the micro power audio amplifier that works between 4.5 to 12 volts DC.