Tag: DC

via HACKADAY: Model of a Transmission Line

Transmission lines are the kind of thing that seems to confuse beginners. After all, the fact that short-circuits can have infinite impedance and open-circuits can behave like a short is not intuitive at all!. That’s why we like [Tinselkoala]’s latest video that shows a nice model of a transmission line. It helps to understand the […]

via HACKADAY: Become Very Unpopular Very Fast With This DIY EMP Generator

Taking a break from his book, “How to Gain Enemies and Encourage Hostility,” [FPS Weapons] shows us how to build our own handheld EMP generator which can be used to generate immediate dislike from anyone working on something electronic at the hackerspace. The device is pretty simple. A DC source, in this case an 18650 […]

via the ARRL: Amateur Radio Volunteers Needed to Support Marine Corps Marathon

Amateur Radio volunteers in the Greater Washington, DC, region are invited to support the 41st running of the US Marine Corps Marathon. The annual event takes place on Sunday, October 30. Volunteers will support communication for the Marathon, which covers a scenic route starting near Arlington National Cemetery, into Washington, DC, and past many monuments […]

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