Circuit-Zone.com - Electronic Projects
Posted on Tuesday, April 22, 2008 • Category: Remote Control
This is an 8 Channel RF Remote Transmitter and Receiver that will allow to remotely control various electronic projects. RF Remote Control provides 2 latched and 6 momentary outputs that could be used to control your favorite devices such as amplifier, robotic devices, RC cars, computer, home appliances, lamps and many other cool gadgets.
Posted on Sunday, April 20, 2008 • Category: Remote Control
This is an assembled 4 Channel RF Remote Transmitter and Receiver with an impressive 200m range. Is simple to connect and it will allow you to remotely control various electronic projects. RF Remote Control provides 4 momentary outputs that could be used to control your favorite devices such as amplifier's volume control, selection of audio sources, wireless light control, light dimmers, robotic devices, motors, RC cars, computer, home appliances, and many other cool gadgets. If required momentary outputs can be easily converted to toggle with 4013 digital low cost IC.
Posted on Sunday, April 20, 2008 • Category: FM Transmitters
Now you can use your MP3 Player to listen your favorite tunes through any FM stereo receiver. Wireless FM transmitter wirelessly connects portable music players to your car or home stereo quickly and easily. Just plug the FM Transmitter into the headphone jack of your MP3 or any audio source including iPOD, PDA, CD Player, Cassette player or connect it to your PC or laptop computer. Tune your card stereo or receiver to the clearest FM frequency, and enjoy your digital music with full sound and convenience.
- PLL tuned transmitter / exciter for rock solid frequency stability over the entire FM band
- Displays Transmitted Frequency on blue backlighted LCD
- 100KHz frequency increments
- Includes three frequency memory buttons
- PCB includes antenna output to which a piece of wire, or standard VHF amplifier can be connected for greater transmission range
- Uses PLL synthesizer chip up to 1.4GHz
- Includes 3.5mm audio jack cable
- Small size
Posted on Saturday, April 19, 2008 • Category: Remote Control
These tiny RF modules are great for building your own wireless remote control or wireless link. Remote control that allows to control different devices can be easily implemented with wide range of encoder/decoder chips (such as HOLTEK HT12E + HT12D or MC145026 + MC145027) or PIC / AVR microcontrollers. RF Module can also be used for sending data at up to 4.8KB/s.
Posted on Saturday, April 19, 2008 • Category: FM Radio / Receivers
This a is complete FM radio receiver in a single chip. The board features a reset and scan button that tunes to the next radio station in a fraction of a second. Receiver offers excellent sensitivity and impressive loudness from such a small speaker. Just connect red (+) and black (-) leads to 2-5V voltage supply (or two to three AA battery cells), extend green antenna wire and you are ready to listen to your favorite FM radio stations.
Posted on Tuesday, April 15, 2008 • Category: Remote Control
This is an 8 Channel IR Remote Transmitter and Receiver based on SM5021 encoder and SM5032 decoder ICs. It is simple to build and will allow you to remotely control various electronic projects. IR Remote Control provides 2 latched and 6 momentary outputs that could be used to control your favorite devices such as amplifier's volume control and selection of audio sources, wireless light control, light dimmers, robotic devices, RC cars, computer, home appliances, and many other cool gadgets.
Posted on Tuesday, April 15, 2008 • Category: MP3 Players
This MP3 player is similar to iPOD shuffle that is based on the latest innovative BU9432 chip from RHOM. It features USB 1.1 / 2.0 Controller, MP3 decoder, system controller for loading MP3 files from a USB flash drive, USB hard drive, USB CD-ROM or USB DVD-ROM drive all in one chip.
Once USB flash drive is connected, BU9432 automatically searches for MP3 files for playback. Audio is controlled by tactile buttons; Play, Stop, Previous Song and Next Song.
BU9432 can decode VBR MP3, MP2, MP1, Layer 1, 2, 3 files with Sampling rate: 8K - 48KHz and Bit rate: 8Kbps - 448Kbps. It can also recognize FAT16 and FAT32 USB flash drive / hard drive with capacity from 32MB to 2TBytes. Audio playback is exceptionally good with 93dB signal to noise ratio and 88dB dynamic range.
Posted on Tuesday, April 15, 2008 • Category: FM Transmitters
This is a high quality PLL Stereo FM Transmitter with build-in VHF amplifier for long transmission range. It is based on BH1417 chip that offers high quality crystal clear stereo transmission. Eight available frequencies are controlled by grounding 3 pins on header connector. This transmitter comes assembled and is ready to use.
- Two on-board transistors increase transmission range
- Uses 7.6MHz crystal for rock-solid PLL FM transmission
- Crystal based stereo encoder
- Very small size
Posted on Monday, April 14, 2008 • Category: PLL Circuits
PLL Synthesizer module is an add-on 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.
Posted on Monday, April 14, 2008 • Category: FM Transmitters
Here is the latest and greatly improved TX200 VFO/VCO FM transmitter. The most versatile transmitter to date that can be turned into high fidelity stereo PLL based 200mW FM transmitter. It is a perfect circuit for transmitting your music around the house and yard. TX200 uses only two coils; one in the oscillator and the other one in the 200mW VHF amplifier so it should be fairly easy for anyone to build. It also includes built-in pre-emphasis and C5 for enhanced sound quality. While assembling the transmitter care must be taken to make sure that C1 is directly connected to L1 and C9 to L2. These caps eliminate the distortions form the DC supply and improve the sound quality greatly. 9V voltage supply is also very important because it provides the exact amount of current to Q1 to produce loud and clear sound quality.
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