Circuit Design

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Circuit Design

47 links - and 1 categories

Antennas : 2M
  • Squarooka Antenna - squared bazooka for 2 meters band - Sort of similar to the one of the 6m omni. Instead of using twin-lead, this design makes use of a more or less regular double bazooka antenna (coaxial dipole). Your attention shall be drawn to the available standart literature, such as Rothammel. In order to "compute" the dimension, Karl Rothammel mentioned that the total length of the dipole shall be 95% of the free-space wavelength. The short-circuit bridges (closing the folded dipole) are to be placed at a distance-fraction being equal to the velocity factor of the coax cable used, which will be 66% using RG-58 or RG174.
    [ Hits: 353 | Votes: 0 | Rating: 0 ]
Antennas : Horn Operating Aids : History
  • Notable Patents on Antenna Design - Patents of most popular antenna models including Zeppelin Antenna, Beverage Antenna , Franklin Antenna , Yagi-Uda Antenna , Sterba Antenna , Rhombic Antenna , Turnstile Antenna , Folded Dipole Antenna , Coaxial Antenna , Slot Antenna , Discone Antenna , Quad Antenna Element , Log Periodic Antenna , Swiss Quad Antenna
    [ Hits: 285 | Votes: 0 | Rating: 0 ]
Operating Modes : Amateur Television Software : Circuit Design
  • DesignSpark PCB - DesignSpark PCB is the world's most accessible electronics design software, specially designed for Rapid Prototyping and turning your circuit ideas into testable boards faster. Easy to learn and easy to use, DesignSpark PCB is free and can you can download DesignSpark from this site.
    [ Hits: 526 | Votes: 0 | Rating: 0 ]
  • Circuit Lab - Online circuit simulation - A browser based circuit simulator offering a large set of functionalities allowing to share and discuss designs
    [ Hits: 528 | Votes: 1 | Rating: 5 ]
  • ZenitPCB - An excellent tool to create, design printed circuit boards in a simple and easy to learn way. ZenitPCB is free for personal and amateur use, limited to 1000 pins, that is more than enought for any amateur radio electronic project
    [ Hits: 141 | Votes: 1 | Rating: 8 ]
  • LogiSim - Logic Circuit Simulator - Logisim is an educational tool for designing and simulating digital logic circuits. With its simple toolbar interface and simulation of circuits as you build them, it is simple enough to facilitate learning the most basic concepts related to logic circuits.
    [ Hits: 125 | Votes: 0 | Rating: 0 ]
  • Fritzing - Fritzing is for amateur circuit designers, enthusiasts and hobbyists to build their own design and develop their own projects. Fritzing offers a rich user interface. The source code of Fritzing is available on our Github. Fritzing is available in several languages and runs on windows, mac and linux.
    [ Hits: 128 | Votes: 1 | Rating: 9 ]
Software : Macintosh
  • Osmond PCB - Printed circuit board design for Macintosh
    [ Hits: 395 | Votes: 0 | Rating: 0 ]
Technical Reference : Amplifiers : RF Amplifiers Theory
  • How to Design an RF Power Amplifier - This video will provide a foundation for understanding how power amplifier circuits work. If you are new to High Frequency Power Amplifier Circuit Design, this is the place to start.
    [ Hits: 673 | Votes: 1 | Rating: 10 ]
Technical Reference : Antenna Rotator
  • ZL1BPU Rotator Controller - The ZL1BPU Rotator Controller has been designed as an add-on unit for the popular Kenpro KR-400 and Yaesu G-400 rotators. The controller consists of a small circuit board which fits inside the rotator control box
    [ Hits: 627 | Votes: 0 | Rating: 0 ]
Technical Reference : Audio Technical Reference : Electronics
  • Electronic Circuits and Design Information - Descriptions, summaries,and tutorials about electronic circuits and electronic circuit design including amplifiers, attenuators, logic, transistor, operational amplifiers and much more
    [ Hits: 395 | Votes: 0 | Rating: 0 ]
Technical Reference : Keyers
  • QLF Filter - Microprocessor based interface designed receives a signal from a Morse key, processes it, and re-transmits it to the radio. A microprocessor in the circuit is pre-programmed with a proprietary algorithm which makes a number of measurements and adjustments to the less percise human generated code.
    [ Hits: 373 | Votes: 0 | Rating: 0 ]
Technical Reference : QRM Eliminator
  • VK5TM Noise Canceller - Noise Canceller kit originally developed about 1989 by G4WMX and GW3DIX and improved by DK9NL and DG0KW.The VK5TM Noise Canceller is another version of the design, with the HF Vox circuit removed and a couple of other minor changes, including the use of SMD JFETs and a double-sided pcb.
    [ Hits: 476 | Votes: 1 | Rating: 10 ]
Technical Reference : Receivers : Progressive Receiver Technical Reference : Test Equipment : RF Probe
  • RF Probe Design - Build you own RF probe, measure the level of RF voltage present at a particular point.
    [ Hits: 542 | Votes: 1 | Rating: 8 ]
Technical Reference : Test Equipment : RF Sweep Generator
  • Sweep Generator with Marker - A simple simple sweep generator circuit design where the sawtooth is generated by the PNP transistor and a 555
    [ Hits: 1161 | Votes: 2 | Rating: 7.5 ]

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