Collaborate Disseminate
Since their invention more than a century ago, crystal oscillators have been foundational to electronic design. They allow for precise timekeeping for the clocks in computers as well as on …read more Continue reading Oscillator Needs Fine-Tuning
It never fails. Lay down some kind of superlative — fastest, cheapest, smallest — around this place and someone out there says, “Hold my beer” and gets to work. In …read more Continue reading Simplest Speaker Oscillator, Now Even Simpler
When it was first introduced in 1968, Fairchild’s 741 op-amp made quite a splash. And with good reason; it packed a bunch of components into a compact package, and the …read more Continue reading Op-Amp Drag Race Turns Out Poorly for 741
If there’s one thing that amateur radio operators are passionate about, it’s the search for the perfect sine wave. Oscillators without any harmonics are an important part of spectrum hygiene, …read more Continue reading No Inductors Needed for This Simple, Clean Twin-Tee Oscillator
Many of us could sit down at the bench and whip up a 555 circuit from memory. It’s really not that hard, which is a bit strange considering how flexible …read more Continue reading Back to Basics with a 555 Deep Dive
[Helge Fykse (LA6NCA)] has a type, as they say. At least as far as radios are concerned, he seems to prefer elegant designs that keep the BOM to the minimum …read more Continue reading Altoids Tin Spy Radio Goes Solid State
In retrocomputing circles, it’s often the case that the weirder and rarer the machine, the more likely it is to attract attention. And machines don’t get much weirder than the …read more Continue reading Clock Hack Gives DEC Rainbow a New Lease on Life
Once ubiquitous, the incandescent light bulb has become something of a lucerna non grata lately. Banned from home lighting, long gone from flashlights, and laughed out of existence by automotive …read more Continue reading An LM386 Oscillator Thanks to Tungsten Under Glass
Here at Hackaday, we love following along with projects as they progress. That’s especially true when a project makes a considerable leap in terms of functionality from one version to …read more Continue reading Spy Transceiver Makes Two Tubes Do the Work of Five
It’s been a long time since vacuum tubes were cutting-edge technology, but that doesn’t mean they don’t show up around here once in a while. And when they do, we …read more Continue reading Two-Tube Spy Transmitter Fits in the Palm of Your Hand