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Pll: Free Circuit Board

Photo: LCD PLL Expansion Board LCD PLL Expansion Board
This LCD expansion board upgrades your exisiting BW PLL exciter / transmitter so that it has an LCD readout and easier frequency adjustment.
1 Watt PLL FM Transmitter Circuit by Veronica Kits
1 Comment - in FM Transmitters
The Veronica 1 Watt PLL FM Transmitter is a pretty decent broadcast PLL exciter or transmitter that can be used alone or with an RF power amplifier for high power radio broadcast.
Portable 1 Watt PLL FM Transmitter (88-108 MHz) Circuit
5 Comments - in FM Transmitters
Schematics / circuit diagrams for a PLL 1 Watt FM radio transmitter that is enclosed in a casing. Oscillator, PLL circuits.
Photo: Serial Port Relay Board (Serial Port I/O Module) Serial Port Relay Board (Serial Port I/O Module)
You can program this stand alone controller via PC Serial Port. Simply connect a serial cable from your computer to the connector on relay board.
Photo: Infrared Remote Relay board and Remote 12 Channel Infrared Remote Relay board and Remote 12 Channel
Low cost 12 channel Infrared Remote Control with relay board
Photo: Serial Port Relay Board Upgrade Kit Serial Port Relay Board Upgrade Kit
You can program this stand alone controller via PC Serial Port. Simply connect a serial cable from your computer to the connector on relay board.
HiTechnic NXT LEGO Circuit Prototyping Boards
0 Comments - in Components
The company HiTechnic has recently released a new NXT Prototyping Board
Photo: Broadcast Warehouse PLL Plus 1 Watt FM Transmitter (Kit Version) Broadcast Warehouse PLL Plus 1 Watt FM Transmitter (Kit Version)
Kit Version: The FM PLL+ is an extremely high specification PLL transmitter / exciter. The specifications of this unit exceed some of the best brands in the businees, including those costing thousands elsewhere.
Photo: Broadcast Warehouse PLL Plus 1 Watt FM Transmitter (Assembled Version) Broadcast Warehouse PLL Plus 1 Watt FM Transmitter (Assembled Version)
Assembled Version: The FM PLL+ is an extremely high specification PLL transmitter / exciter. The specifications of this unit exceed some of the best brands in the businees, including those costing thousands elsewhere.
Photo: Broadcast Warehouse LCD PLL 1 Watt Exciter (Kit Version) Broadcast Warehouse LCD PLL 1 Watt Exciter (Kit Version)
Kit Version: The LCD PLL 1 Watt FM Transmitter is an extremely nice piece of technology. This exciter features a built-in LCD screen and digital frequency control.
Photo: Broadcast Warehouse LCD PLL 1 Watt Exciter (Assembled Version) Broadcast Warehouse LCD PLL 1 Watt Exciter (Assembled Version)
Assembled Version: The LCD PLL 1 Watt FM Transmitter is an extremely nice piece of technology. This exciter features a built-in LCD screen and digital frequency control.
5 Watt PLL FM Transmitter (Early Dutch Radio JukeBox)
1 Comment - in FM Transmitters
Interesting, hand-drawn schematic for a PLL FM Stereo Transmitter, with approximately 5 Watts RF output power.
Photo: USB Interface Board - (Universal Serial Bus Circuit) USB Interface Board - (Universal Serial Bus Circuit)
Allows for connection to Personal Computers USB (Universal Serial Bus)
Photo: Broadcast Warehouse All-in-One 1 Watt FM Transmitter PCB (Fully Assembled) Broadcast Warehouse All-in-One 1 Watt FM Transmitter PCB (Fully Assembled)
This is the Brodcast Warehouse All-in-One PCB 1 Watt FM Transmitter. This item has a built in limiter / compressor & stereo encoder!
Photo: Touch Switch Relay Board Touch Switch Relay Board
Both a touch and a contact switch are built on one PC board so that the builder can see how each works. A battery can power the contact switch but you'll need an AC power supply for the touch switch to work well. The circuit switches a relay with a 3 Amp
Photo: Parallel Port Relay Switch Board Parallel Port Relay Switch Board
Use an old PC as a "dedicated controller" to turn on or off devices lab or radio shack. The circuit includes eight relays controlled with (included) software for either DOS or Windows 3.1. The kit is a boon to the Science Fair project, laborator
Photo: Parallel Port Relay Board Parallel Port Relay Board
Use an old PC as a dedicated controller to turn on or off devices lab or radio shack. The circuit includes eight relays controlled with (included) software for either DOS or Windows 3.1. The kit is a boon to the Science Fair project, laboratory experiment
Photo: * USB PLL FM Stereo Transmitter (FCC Approved) * USB PLL FM Stereo Transmitter (FCC Approved)
An excellent Stereo FM Transmitter which operates through the USB port of essentially any computer. FCC Compliant!