Category Archives: circuit

New Circuits with Old Technology

Before the invention of transistors, vacuum tubes ruled the world. The only way to get amplification or switching (or any electrical control of current) back then was to use tubes. But some tube design limitations were obvious even then. For one, they produce an incredible amount of heat during normal …read more

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Posted in amplifier, circuit, classic hacks, radio, transistor, vacuum tube | Leave a comment

Hexagons – The Crazy New Breadboard

A breadboard is a great prototyping tool for verifying the sanity of a circuit design before taking the painstaking effort of soldering it all together permanently. After all, a mistake in this stage can cost a lot of time and possibly material, so it’s important to get it right. [daverowntree] …read more

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Posted in breadboard, circuit, hexagon, prototyping, tessellation, tool, tool hacks | Leave a comment

Chris Gammell Talks Circuit Toolboxes

Chris Gammell wants to know: What’s in your circuit toolbox?

Personally, mine is somewhat understocked. I do know that in one of my journals, probably from back in the 1980s, I scribbled down a schematic of a voltage multiplier I had just built, with the classic diode and capacitor ladder topology. I probably fed it from a small bell transformer, and I might have gotten a hundred volts or so out of it. I was so proud at the time that I wrote it down for posterity with the note, “I made this today!”

I think the whole point of …read more

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Posted in 2018 Hackaday Superconference, amp hour, circuit, cons, Hackaday Columns, microcontroller, mosfet, notebook, power protection, toolbox, widget | Leave a comment