I think I saw it (or something like it) on a cirquit diagram in the
1950s. Any idea which component it is? (I am not an electronics pro).Thank you
Rich To email me remove the dog from my address.
Could be a tapped inductor, but it's a bit hard to tell, out of context.
I don't think it's random access memory, although it does look a little like Aries (the RAM).
-- John Miller email domain: n4vu.com; username: jsm(@) Surplus (For sale or trade): Tektronix 465B oscilloscope New Fellowes leather brief/notebook case
Thank you. If anyone could point me to a URL that shows a similar symbol, I'd much appreciate it.
Rich To email me remove the dog from my address.
Maybe a variant of the Greek character Upsilon w/hook?
It could well be. Can you tell me what that symbol would be used to denote in 1950s electronic schematics?
Thank you
Rich
To email me remove the dog from my address.
-- I can't recall seeing that symbol on a schematic. Could you scan and post enough of the schematic containing the symbol and post a link to it to give us a clue?
IEEE std 315 refers to something that looks like what you drawn as a partial transformer (para 6.4.20)
Anyway, "IEEE Std 315 - Graphic Symbols for Electrical and Electronics Diagrams (Including Reference Designation Letters)" would be a good place to look if you have access to it.
More of the circuit diag. may be helpful.
Rich wrote:
On Tue, 5 Apr 2005 08:19:25 -0700, Rich wrote (in article ):
As someone else suggested, it looks like a very small winding of a transformer, possibly center-tapped.
Show us the symbol in context of a portion of the diagram.
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Miller had it, then let it go:
I wish I could. I am going entirely from memory. I think the symbol may have been enclosed in a circle, like transistor symbols are. I also think there was a bit more to it than what I drew. there may have been a short line crossing the central vertical line, or something.
Rich
To email me remove the dog from my address.
Now that you've said that, chances are high that you're never going to get a *CORRECT* answer. Lots of guesses, for sure, but no way to know that any of them are right or wrong.
Without knowing *FOR SURE* what it's supposed to look like, as opposed to your now-known-to-be possibly faulty/erroneous drawing from memory, it could be literally ANYTHING, from a block-diagram symbol for "turbocharged V8 engine" to a loose eyebrow hair that fell on the original drawing while it was being made and then somehow got propagated into future copies, to a hobo-cant "Avoid this house - owner has vicious dog and shoots at hobos" symbol, or an ancient etruscan glyph meaning "god" - there's simply no way to tell that doesn't involve guessing, with no ability to verify the guess as right, wrong, or otherwise.
Lack of context is also contributing to making it much more difficult to pin down what the intended/correct meaning is - were it shown as part of a circuit, it might be possible to figure out "It has to be the symbol for a _______ because that's the only component that makes even a little bit of sense at this position in a circuit like this."
I've got a similar "problem" with a word from chemistry - I remember my high-school chemistry teacher using a several-syllable word that started with an "am" sound, which was applied to a class of materials/compounds (plain old water happens to be one of them) that could be classified as both acid AND base, depending on the pH of what it was being combined with - mixed with something strongly acidic, a material to which the word was applicable would behave as a mild base. Mixed with a strong base, it would behave as if it were a mild acid. Mixed with material that was neither acid nor base, it behaved as if it were neither acid nor base itself. I've searched for literally years to find someone who can tell me again what that word was, with no luck at all. (Asking the teacher isn't a viable option, since he managed to find himself splattered all over several hundred feet of highway and the grille/hood/windshield of a drunk's pickup not long after I finished his class)
-- Don Bruder - dakidd@sonic.net - New Email policy in effect as of Feb. 21, 2004. Short form: I'm trashing EVERY E-mail that doesn't contain a password in the subject unless it comes from a "whitelisted" (pre-approved by me) address. See for full details.
Concur on all points. Looks like an astrological symbol to me, but what do I know.
Ouch. Hope you didn't like him very much.
"Amphoteric".
Mark L. Fergerson
Eh... He was OK. Not the "bestest of the best" I ever encountered, but reasonably well above the "He's a teacher, therefore he's the enemy" mark. He also ran the school chess club, introducing me to the joys (and frustrations...) of the game, routinely beating the pants off me and most comers for what seemed like ages.
Mark, I think you may have just pulled a rabbit outta yer rump! That looks suspiciously like the word I've been trying to find for so long. Lemme go do a lookup and see...
am?pho?ter?ic adj.
Having the characteristics of both an acid and a base; Capable of reacting chemically either as an acid or a base.
YES!!!! THAT'S IT!!!! HOORAY!!!!!!
20 years of on again, off again searching FINALLY recovers "the lost word"!I've had chemistry majors look look at me like I had three heads when I've asked. A senior chemist at Dow Chemical in Midland Michigan laughed at me and said there's no word that fits the definition I gave, only a hyphenated phrase I've long since forgotten. College chem instructors scratched their heads and said "idunno". Searches through dictionaries turned up nothing. (Ever try looking up a word based on its definition??? OY! Wotta pain!) At times, I even began to wonder if I was imagining him using it.
You're my hero, Mark! :)
Well, maybe not "hero", but boy is it good to know I wasn't dreaming all these years!
-- Don Bruder - dakidd@sonic.net - New Email policy in effect as of Feb. 21, 2004. Short form: I'm trashing EVERY E-mail that doesn't contain a password in the subject unless it comes from a "whitelisted" (pre-approved by me) address. See for full details.
In case you're interested, I use an old PC based dictionary, The American Heritage Talking Dictionary, that will search the definitions. I put in "base and acid and chemical," and "amphoteric" was the only result. The program seems to be part of Compton's Home Library, it may still be available. The OED on disk would probably be able to do that as well. I can get into an online version through my college, but it's a pain.
-- Barry
Haven't installed it on my current box, but yeah. It's good.
.
Oh great! You come in here and undermine my tentative lifeline to my long-lost component , and in the process solve your long-lost physics puzzle. There's justice for you! :-[
Rich
Uh... Sorry, Rich...
But let's face it... Mine was, unlike yours, an "accurate drawing", so to speak...
Just a matter of"waving it in front of the right set of eyeballs" to get the answer.
Yours, on the other hand... Well, as you said yourself, it might not even be the symbol you're remembering. We're STILL trying to guess whether what you drew actually has any relationship to the symbol you think you remember, and if it does, what symbol (of several possibles, in several different areas of specialization) it could be.
-- Don Bruder - dakidd@sonic.net - New Email policy in effect as of Feb. 21, 2004. Short form: I'm trashing EVERY E-mail that doesn't contain a password in the subject unless it comes from a "whitelisted" (pre-approved by me) address. See for full details.
Well, shit. Now you can't look him up and whup him (assuming you got better than you were then).
And I wasn't even a chemistry major. Truth be told, the only reason I remember it is that my pattern-recognition wetware keeps trying to break it down into components "am" from "ambi" and something referencing photography, so that'd make it mean "can't decide whether it's black or white".
That's quite all right with me; heroism is usually an attribute awarded posthumously. Especially for doing something right while screwing up...
Mark L. Fergerson
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