Recent content by DrewE

Just a heads-up: I will be unable to access the internet for a good while (likely several months). Don't take that to mean I've fallen off the face of the earth or something similar; I do intend to be back when able.May all your technical gremlins manifest themselves before the opening...

Doubtless everyone is just jumping at the opportunity to replace a two-syllable name for a common widget with a five-syllable one!

It probably goes without saying, but carriage bolts and T-nuts won't work together; there's no way to tighten them together since neither the head nor the nut can be turned once things start to get tight.Has anybody ever use this sort of joint often used for table legs, where the leg is bolted...

The transmitter does not really connect to its receiver in any way; it merely transmits the radio signal, and the receiver either picks it up or it does not (or, for that matter, many receivers could pick up the same signal). The radio signals flow in one direction only.If I had to guess, I'd...

Here's one (comparatively) readable application note on power factor correction for switching power supplies, courtesy of Toshiba. It briefly mentions the use of passive PFC circuits (basically sticking an inductor in the front end of the power supply), and goes into a reasonable amount of...

Would it maybe work to get some actual cornstalks, paint them black, and attach them to some sort of a netting or screening or something? Or do something similar with paper/foil/whatever cutouts? Instead of netting or whatever, maybe a support made to look like a split-rail fence or similar...

Filters/transparencies associated with the lens wouldn't appear white, but black; they could only block light, not create it. (Placing one over the end of the lens itself would be pretty much invisible due to being wildly out of focus.)It's presumably whatever sort of titling technology they...

Consuming excess current at the peak of the waveform will necessarily lead to a poorer power factor. Switch mode power supplies without power factor correction have pretty poor power factors due to the peaky nature of their current consumption, and power factor correction works by smoothing out...

Similar sort of idea to the ART box: a bog standard direct box (or two) with ground lift switches would probably help muchly, too, and there's a decent chance you have it kicking around somewhere already.

Do you have access to a bandsaw with a metal cutting blade and a rip fence?

I think most (decent) switch mode power supplies these days have some form of power factor correction built-in, as I believe is required by many certifications/codes. For ones that do, the current waveforms for the supply will be approximately sinusoidal, and the neutral currents well-behaved...

It would be pretty simple to program a (basic) Arduino to act as a six channel potentiometer to PWM controller. You'd just need some sort of a switching device--a MOSFET of appropriate ratings would be a reasonable choice--for the output to control LED tape. It doesn't look to me like it would...

According to the dimmer documentation I can find, it's a bidirectional RS-485 bus, operating at 62.5 kBaud, 9 bits (!), with apparently the dimmer acting as a master and the control station(s) as slaves in whatever (proprietary) protocol they use. Obviously this would have to be half-duplex...

Unfortunately, I've pretty much written all of my "extensive" knowledge on the subject here already.

Most non-true-RMS meters measure the average voltage (rather than the peak voltage), and scale that to give the RMS equivalent assuming a sine wave. The general concept is the same, in so far as the displayed value is only correct for a very few select waveforms, and incorrect to various...