Latest threads in Electronics Designshow only best voted threads
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Female IEC connectors on ATX power supplies
I remember back in the day some ATX power supplies used to have an additional IEC connector on the back, sort of like this: That was handy. Anyone know why they don't see to do that anymore?
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7 years ago
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45 | |
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Touch Sensing (Capacitive, Proximity, others?)
All, I am working on an embedded application where I want the device to turn on (microcontroller wakes up) when the user touches the device with their hand . We want to conserve power and don't want...
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7 years ago
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measuring jitter with a Rigol scope
We got some pretty big orders and we figured that we'd need about 1000 hours of production test time to get the stuff out. So I am designing a couple of new test sets and the kids will grind out a...
13
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7 years ago
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13 | |
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200mW lasers for two bucks?
Car tail light "collision warning" lasers. Line-generators, but also floating logos following you down the road. Almost a quarter-watt output?! Gotta be a scam. Many are two bucks, free shipping all...
13
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7 years ago
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Zener diode below-threshold reverse current
I know the theory, more or less. In practice, what's the reverse current through a zener diode at levels well below the breakdown voltage? I've got a circuit where I'm feeding a 12V linear regulator...
269
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7 years ago
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269 | |
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shunts
I've got to remember to add a current-sense shunt to every power rail on every board. Supply current is too often something that I want to know. Low ohm resistors are cheap these days.
15
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7 years ago
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OT: Nice truck!
Maybe next time you roll the Justice Wagon into NYC to "do an extraction", it would make sense to pick a vehicle that's um, a little less conspicuous.
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7 years ago
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Autoscan --> motorola LS1203 scanner
Does someone knows how to prevent LS1203 scanner to enter in "sleep mode " ?. I have set auto scan mode to scan continuously, but after some time of inactivity, scanner will enter sleep mode. The...
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7 years ago
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delta undulator, possible to produce OAM?
Hi, I was reading about "delta undulators" which are related to undulators / free electron lasers etc. They add more rows of magnets and adjust their placement to give variable polarization of the...
1
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7 years ago
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Powerlifting Squat Depth Detection
How do they do this? -- Don Kuenz KB7RPU Flappity, Floppity, Flip! The Mouse on the Mobius Strip. The Strip revolved, The Mouse dissolved In a chronodimensional skip.
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7 years ago
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"fetishization of IQ"
This is interesting: Note that I am on record here for telling self-declared smart people that intelligence is not something they can take credit for, and that even dumb people have feelings and have...
119
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7 years ago
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119 | |
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Corsair magnetic levitation fans (maglev fans)
Hello, I find this a very interesting product: It claims that it's fans "levitate". Does this mean it no longer requires any oil and thus no more cleaning because of dust+oil+black smoke stuff...
5
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7 years ago
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OT? Shawyer EM Drive Explained. Again.
There's a new peer-reviewed paper explaining how the so-called EM drive g enerates the (barely, questionably) observed (extremely tiny) thrust: The nub of it is this: "In the thruster?s cavity...
3
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7 years ago
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Voltage divider part 2
I dont know why is this happening but if i trigger my raspberry test pin with 3.3V ( directly from the RSP pin ), impulse is triggered correctly every time, but if i trigger it from my voltage...
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7 years ago
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Ping Tim Wescott: YouTube [long]
Hi Tim, I prepare lots of "tutorials" -- text & multimedia encapsulated in a PDF container -- for various subjects/technologies. Typically as a way to explain an algorithm/technology outside the...
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7 years ago
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