BH1417 USB FM Transmitter

This is the BH1417 USB FM Transmitter, which features a built-in Phase-Locked Loop (PLL) circuit. It converts low-frequency audio signals into high-frequency signals, allowing any audio device equipped with an FM radio (such as stereo systems, car CD players, MP3 players, and DVD players) to function as a standard radio station. The transmitter's power output is adequate for reliable signal reception over distances of several tens of meters. The core of the device is...

The BH1417 USB FM Transmitter is designed for versatile audio transmission, enabling a wide range of devices to wirelessly broadcast audio signals. The PLL circuit is a critical component that ensures stable frequency modulation, minimizing drift and enhancing audio quality. This transmitter operates by taking an audio input, which is typically in the low-frequency range, and modulating it onto a high-frequency carrier wave suitable for FM transmission.

The circuit includes several key components: an audio input stage, the PLL circuit for frequency stabilization, a modulator to encode the audio onto the carrier wave, and an RF output stage to amplify the signal for transmission. The audio input can be connected via a 3.5mm jack or USB interface, making it compatible with various audio sources.

The transmitter's power output is designed to reach a range of approximately 30 meters, depending on environmental conditions and obstacles. This range is sufficient for personal use in home or vehicle settings, allowing users to enjoy their audio content without the need for wired connections.

In addition to its primary function, the BH1417 USB FM Transmitter may also include features such as adjustable frequency selection, allowing users to choose an available FM frequency to avoid interference with local radio stations. Power supply options typically include USB power, making it easy to connect to a variety of power sources.

Overall, the BH1417 USB FM Transmitter is a practical solution for those seeking to wirelessly transmit audio from various devices to FM radios, providing flexibility and convenience in audio playback.Here`s BH1417 USB FM Transmitter with built-in PLL circuit. Its low-frequency signal is converted into high-frequency, which can take any audio device with FM radio (stereo, car CD, MP3, DVD player, etc.), as a normal radio station. Transmitter power is sufficient for reliable reception of its signal within a few tens of meters. The basis of the device is.. 🔗 External reference