AM FM Simultaneous Transmitter Using Digital IC circuit

Simple long-distance wireless FM microphone circuit

The loop antenna L1 is utilized for emission and also functions as the oscillation coil. The high-frequency current flowing through the antenna is synchronized in resonance with the oscillation frequency, ensuring optimal emission performance. Practical applications indicate that the effective...

Wireless Transmitter

A basic circuit of the transistor UHF radio transmitter with a surface acoustic wave resonator (SAW) is presented. The SAW is utilized as a positive feedback element connected between the transistor's base and an LC network in parallel. In this...

Valve Transmitter circuit 70W

This transmitter, equipped with a quality antenna and utilized under optimal conditions, can achieve a range exceeding 45 km. The configuration benefits from the output lamp's elevation, enhancing the fidelity of the transmitted signal. The 6V6 lamp is employed in...

Fm Light Beam Receiver Circuit

This receiver is designed to detect infrared (IR) or light beams that are frequency modulated on a 50-kHz carrier. The transistors Q2, Q1, Q3, and Q4 form an active filter and amplifier, while the differential amplifier formed by Q5 and...

50 kHz FM Optical Receiver

Frequency modulation (FM) can be used to transmit an analog voltage level signal with good noise immunity. The transmission itself might employ different techniques. Frequency modulation (FM) is a method widely utilized in communication systems to encode information in a carrier...

Electronic Transformers Modulation

Wave-filter principles are utilized in various circuits beyond filters, such as in the design of modulation transformers for high-level amplitude-modulated radio transmitters. Some of these transformers are quite large. In plate-modulated power amplifiers, the modulator power necessary for achieving 100...

80 Watt stereo transmitter

This transmitter was designed from the ground up to provide very high sound quality, coupled with excellent frequency stability, reliability, etc. It can be used as a standalone transmitter to serve a medium-sized town, or as an exciter to drive...

fm telephone circuits

The FM telephone circuit is constructed on a compact PC board that can be easily integrated into the housing of a telephone, functioning as a pseudo-speak earphone. This FM circuit connects in series with the telephone line, drawing power from...

TV transmitter circuit using only 2 transistors operates from 12V

A simple two-transistor TV transmitter circuit that operates from 12V. It is compatible with PAL B and PAL G systems. The described circuit utilizes two transistors to create a basic television transmission system capable of operating on a 12V power supply....