This small FM transmitter with a range of about 50 meters designed for connection to the USB port. With lots of mini-transmitters then you have a comprehensive, action-packed radio program. Due to the power supply via the USB port of a high frequency stability is achieved. Alternatively, the receiver, a battery 5 to 12 volts to operate.For Assemblying this FM transmitter kit, a beginner will take about 3 hours to tinker the issuer, an... [ more ]
This USB FM transmitter can be used to listen to your own music throughout your home. The transmitter circuit use no coils that have to be wound. When this FM transmitter used in the car, there is no need for a separate input to the car stereo to play back the music files from your MP3 player.This FM transmitter use a chip made by Maxim Integrated Products, the MAX2606. The VCO (Voltage Controlled Oscillator) in this IC uses a Colpitts... [ more ]
Here's a simple stereo FM transmitter for sending the music around the house, or creating a wireless link between your iPod and a receiver in your car, this transmitter will let you do these things easily. With BA1404 Stereo transmitter you will be able to transmit MP3 music from your iPod, computer, discman, walkman, TV / SAT receiver, and many other audio sources.This FM transmitter design is a result of many hours of testing and tweaking.... [ more ]
Here's a PLL Synthesizer circuit is based on SA1057 and PIC16F84 that converts any existing FM Transmitter into stable rock-solid PLL transmitter. Frequency is selected through 8-DIP switch. PLL Synthesizer board will also require a 100K resistor and varicap diode such as MV2105 or MV2109 to control the frequency of the transmitter's oscillator.FeaturesPower supply: 8-15 V stabilized, 40 mA Frequency range: 82,5-108 MHz Step... [ more ]
Here's a high quality stereo encoder using PIC18F1220 microcontroller. The sampling frequency used in this stereo encoder is 97 times higher than the pilot tone frequency. This makes very easy to reject all spectral residues around the sampling frequency without affecting the main signal characteristics.Using of a microcontroller allows to build this stereo encoder with reduced part count and get excellent results in real operation. Here's a... [ more ]
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