Many people want to tune in to their favorite music while driving. It has made numerous drivers rely on a cell phone, mp3 player, or another streaming gadget to get music. The issue with cell phones and mp3 players is that they may lack quality. The best stable music quality in a vehicle can just produce an inherent sound system or FM transmitter.
A basic mp3 FM transmitter circuit that appeared here can be assembled effectively in a couple of moments if all parts are accessible. All the segments utilize in this circuit are broadly useful and at a minimal cost. The circuit will fill in as the best FM transmitter for just communicating, and broadcasting music around your home and yard. However, it utilizes to broadcast the yield of any hardware like Walkman, mp3 player, iPod, and so forth.
Hardware Components
The following components are required to make MP3 FM Transmitter Circuit
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | Transistor | 2N3904 | 1 |
| 2. | Antenna | – | 1 |
| 3. | Stereo Plug | – | 1 |
| 4. | Inductor | 10 turns | 1 |
| 5. | Variable capacitor | 1 – 30 pF | 1 |
| 6. | Ceramic Capacitor | 1nF, 10nF, 100nF, 330nF, 2pF, 4.7pF, 28pF, 62pF, 100pF | 1 |
| 7. | Resistor | 3K,47K,10k,30K,39K,160K,470 ohms | 1 |
| 8. | Battery | 1.5 – 3 Volts | 1 |
2N3904 Pinout
For a detailed description of pinout, dimension features, and specifications download the datasheet of 2N3904
MP3 FM Transmitter Circuit
Working Explanation
The circuit reference here can likewise operate in such a way that the inductor L1 is equivalent to 8 to 10 turns of 22 enameled wire twisted on a 6mm structure. Moreover, evacuate the structure in the wake of winding the inductor. At the nearby inductor, there is a 1-30 pF trimmer capacitor, which is utilized to alter the recurrence or frequency of this mp3 FM transmitter.
In the wake of making the circuit, apply control and associate it to the sound yield of your FM transmitter device. At that point set your FM radio recurrence or frequency on a clear spot and marginally change the transmitter’s trimmer with a nonconductive instrument. Furthermore, stop where you found the sound of your music. The least receiving wire or antenna length ought to be 12 inches however on the off chance that you need to expand the range, at that point increment the radio wire length to 30 inches. You can control this FM transmitter circuit with any size/sort of 1.5V or 3V battery.
Applications and Uses
- The FM transmitter ought to associate with various gadgets. For instance, the best FM transmitters can associate with cell phones and mp3 players to communicate, and broadcast music and web recordings.
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