Collaborate Disseminate
Old radios often had selenium rectifiers to convert AC to DC. The problem is that the old units, dating back to 1933, are prone to failure and to release dangerous …read more Continue reading Replacing Selenium Rectifiers
These days, it’s super-easy to jump onto the World Wide Web to find purported replacement parts using nothing but the part identifier, whether it’s from a reputable source like Digikey …read more Continue reading Comparing AliExpress vs LCSC-Sourced MOSFETs
We don’t know how you feel when designing hardware, but we get uncomfortable at the extremes. High voltage or current, low noise figures, or extreme frequencies make us nervous. [Orion …read more Continue reading An Open Source 6kW GaN Motor Controller
To drive a MOSFET requires more than merely a logic level output, there’s a requirement to charge the device’s gate which necessitates a suitable buffer amplifier. A variety of different …read more Continue reading The 555 As A MOSFET Driver
[M Caldeira] had a project in mind: replacing a common vacuum tube with a solid-state equivalent. The tube in question was an EABC80 or 6AK8 triple diode triode. The key …read more Continue reading Making a Solid State 6AK8 Tube
Metal-oxide semiconductor field-effect transistors (MOSFETs) see common use in applications ranging from the very small (like CPU transistors) to very large (power) switching applications. Although its main advantage is its …read more Continue reading Introduction to MOSFET Switching Losses
When we last left [Wes] amidst the torn-open guts of his Logg Dogg logging robot, he had managed to revitalize the engine and dug into the hydraulics, but one big …read more Continue reading Sketchy Logg Dogg Logging Robot Remote Control Hacking
How many terminals does a MOSFET have? Trick question since most have three leads, even though there are really four connections to the underlying device. It isn’t a conspiracy, though …read more Continue reading MOSFETs — the Big Lie
[Helge Fyske (LA6NCA)] may not be an actual spy — then again, he may be; if he’s good at it, we wouldn’t know — but he has built a couple …read more Continue reading Spy Radio Setup Gets a Tiny Power Supply for Field Operations
Here at Hackaday we really like to feature projects that push the limits of what’s possible, or ones that feature some new and exciting technology that nobody has ever seen …read more Continue reading Linear Power Supply’s Current Limiter is a Lesson in Simplicity