TV Audio Video Transmitter

This TV transmitter transmits audio and video signals from camcorders, DVD players, VHS players, satellite systems, video games, etc., broadcasting them on a channel free from the VHF strip. These signals can be radiated using a common antenna and captured at distances of up to approximately 500 meters, which is suitable for urban areas. It is essential to exercise caution to avoid interfering with frequencies used by other broadcasters and emergency services. The performance may vary depending on local conditions, such as the presence of obstacles. The circuit operates with a voltage supply of 12 to 15 volts and demonstrates excellent capabilities in transmitting both monochrome and color signals. A significant advantage of this project is its ease of setup and adjustment, as it utilizes only two coils. It is particularly ideal for use with wireless surveillance cameras. The core of this TV video and audio transmitter is the LM1889N integrated circuit from National Semiconductor, which functions as a video modulator for TV applications with an 18-pin DIL package.

The TV transmitter circuit utilizes the LM1889N integrated circuit, which is designed specifically for modulating video signals for television transmission. The circuit architecture includes essential components such as resistors, capacitors, and inductors that work together to modulate the audio and video signals from various input sources.

The circuit is powered by a DC voltage source ranging from 12 to 15 volts, ensuring stable operation. Input signals from devices like camcorders or DVD players are fed into the LM1889N, where the video signals are modulated onto a carrier frequency suitable for VHF transmission. The modulated signal is then amplified and sent to a common antenna, which radiates the signal over a distance of up to 500 meters.

The use of only two coils in the design simplifies the tuning and adjustment process, making the transmitter user-friendly. The coils are critical for setting the operating frequency and ensuring optimal performance in terms of signal quality and range. The circuit's design takes into account the potential for interference with other frequencies, emphasizing the need for users to operate the transmitter responsibly, especially in urban environments.

In applications such as wireless surveillance, the transmitter's ability to handle both monochrome and color signals makes it versatile. The compact design, combined with the straightforward setup process, allows for easy integration into various video transmission systems. Overall, the LM1889N-based TV transmitter represents a practical solution for transmitting audio and video signals wirelessly while adhering to necessary regulations and minimizing interference risks.This TV transmitter transmits audio and video signal from Camcoder Camera, DVD, VHS, Satellite, video game, etc. Playing them in a channel free from the strip of VHF. These signal can be radiated with a common antenna and captured in an it distances of until about 500 meters that it is the most appropriate for urban areas, reminding that and necessary to be a lot of caution and careful for not interfering in frequencies of other issuing, as well as to emergency services.

Depending on the local conditions (existence or not of obstacles). Fed with tensions from 12 to 15 Volts, the circuit has excellent I carry out so much in the emission of monochrome signal, as in colors. An important point of this project ?the easiness with that he can be set up and adjusted, since only two coils are used.

Ideal to be used with surveillance cameras turning the without thread. As it Works the tv video and audio transmitter with lm1889n The heart of this circuit transmitter ?is the integrated circuit LM1889N of National Semiconductor, that consists of a Modulator of Video for TV in an involucres of 18 pins DIL.","1109"," ","0", 🔗 External reference