T&L Publications

Will: Using the current meter on the 10A scale without any fuse at all is like using a 10 A fuse.<p>In this particular topic, we know why the fuse blew, but if the reason is unknown (e.g. something goofy in the set) you run the risk of burning up even more stuff because the only protection you have ...

Damn, you're good. Whatley.<p>I cited your article back in March on Ungar Solder Stations for one of our questioners who wanted spare parts for his station on the theory that your article would point him in the "repair" direction rather than the "remove and replace" direction. He...

Edd Whatley Charter Member Member # 202<p> posted March 07, 2005 11:20 PM<p>The above-cited post contained a lot of information on Ungar stations. I just searched the NUTSVOLTS forum by the search term "Soldering Station," but now you can search it more specifically by the date and the mem...

Review Diode Switching in almost any ARRL handbook.

Gee, I wonder if it's picking up a horizontal oscillator from a tv or monitor nearby.<p>Or a lamp dimmer.<p>[ September 07, 2005: Message edited by: terri ]</p>

I used to keep old alnico speaker magnets around the shop for various purposes, like clamping dwgs to the lathe headstock, and of course they'd lose their strength over time due to dropping and the fact that they didn't usually have keepers.<p>I remagnetized a couple of them as a sort of experiment ...

Let's not confuse the issue with over-complication, either. The point was not that energy appeared from nowhere in Faraday's experiment. We all know where it came from.<p>Nowadays.<p>An ex-post facto understanding of the phenomenon, especially a couple of decades later, when the phenomenon becomes a...

<p>[ September 03, 2005: Message edited by: terri ]</p>

Two quotes interest me:<p>From the DePalma article:<p> "DePalma may have been right in that there is indeed a situation here whereby energy is being obtained from a previously unknown and unexplained source."<p>From Mike:<p>"I don't belive this. No matter how hard you try this just is...

I wonder if an SDK-85 might do for you.<p> http://www.old-computers.com/museum/computer.asp?st=1&c=805 <p>You had to program it in hex, and the memory was volatile, so you had to keep it powered up to remember anything, but it sure was handy to learn with. I had always wanted to stick a serial p...

My Pop was a Master Plumber and I wish I had some of his old tools --including one of those soldering irons. I was curious if your great uncle had any of those bars of tin with which the old-timers used to make their own solder. <p>As I recall, they'd melt the lead in a gasoline-fired pot and sort o...

"The world according to AARP." I like that one.<p>Hang in there. I figure I've had two or three times in my life that were totally hassle-free for a longish period, say a year or so. When I tell folks this they say I was lucky.<p>Right now I'm a little frosted over 'cause when I got my fir...

Unfortunately, most of my references on u/s are not available, so I'm working from memories which have a hard time "percolating" up from the depths.<p>I didn't mean to muddy the waters, just offer some suggestions. The most profitable/practical suggestion is to request "R & D"...

Well, GBS had the literary clout to misuse and make fun of our admittedly bizarre language. But most of us don't.<p>I have the original of my parents' marriage license from early 1939 and an original of my birth certificate more than nine months later.<p>One of these days I'm going to frame them tog...

jwax: <p>Back to ultrasonics.<p>The PZ crystals aren't the only way to generate the u/s waves. Look up magnetostrictve transducers, also. (A coil around a magnetostrictive material makes it expand slightly when the magnetic field builds up.)<p>This doubles the applied frequency, since the effect occ...