Any one want to help identify a few components? - Page 1
Forum section: electronics / beginners

author: IonizedGears
author_rank: Regular Contributor
timestamp: February 04, 2013, 09:51:57 pm
content: Well, i purchased everything you see in the picture a day ago online for 21 usd (7.95 + 13) USD and i would like to know if i got a great deal. I am waiting for the parts to come so i can mess around with the parts and fix a few things. Can you guys help me identify everything in the picture because i got most of the easy to see things identified but i can't tell what some of the parts are( The IC's aren't that important to know what they do yet because they aren't needed yet) (Is that a BNC to a BNC and a terminal adapter in the middle of the screen?)

author: PA0PBZ
author_rank: Super Contributor
timestamp: February 04, 2013, 09:58:58 pm
content: *reports missing picture*

author: IonizedGears
author_rank: Regular Contributor
timestamp: February 04, 2013, 10:00:16 pm
content: Oops, for some reason the picture didn't save. Fixed now.

author: w2aew
author_rank: Super Contributor
timestamp: February 04, 2013, 10:17:14 pm
content: Looks like the majority of parts are in original, marked packages, so they're already identified. The ICs can easily be identified by googling their part numbers. The components in the unmarked bags on the left and lower left look like capacitors and maybe some resistors, but the picture is too small to be sure. Looks like you also have a simple BNC-Tee adapter with a termination connected to one side.

author: daqq
author_rank: Super Contributor
timestamp: February 04, 2013, 11:06:19 pm
content: Hi,at a quick glance there's nothing extra there - capacitors in really weird packaging, but still simple capacitors, a few integrated circuits, and some connectors.The thing at the top right corner looks interesting (an indicator perhaps?) but a better resolution photo would be needed for a proper ID. Also, the clock thingie and the box between the two might hold something interesting.Other than that I don't see anything interesting - you got a set of caps that will be good for experimenting, and there seems to be a fair amount of them. Possibly worth 21 USD on the whole (depending on the amount of the stuff and type of it in those bags), might be quite useful.Add a better resolution picture, you will get a better answerDavid

author: Thor-Arne
author_rank: Unknown
timestamp: February 04, 2013, 11:23:50 pm
content: Better resolution picture of the individual parts with the markings clearly visible.

author: c4757p
author_rank: Super Contributor
timestamp: February 05, 2013, 12:08:56 am
content: It boggles my mind to think that an entire PC desktop used to be that resolution. Now the picture is the size of a small postcard in the middle of my laptop screen - and I can hardly identify anything in it.

author: mark-r
author_rank: Contributor
timestamp: February 05, 2013, 12:17:48 am
content: Ideally, you'll need to know if that BNC T-piece and terminator are 50 ohm or 75 ohm before you use them for anything critical (VHF stuff). If the lot came from someone into computers then it's probably 50 ohm from an old 10baseT network, if it came from a TV/video person then it may be 75 ohm CCTV stuff.

author: IonizedGears
author_rank: Regular Contributor
timestamp: February 05, 2013, 01:40:28 am
content: I fell asleep so i couldn't reply until now. The picture is what was shown on the ebay listing so i can't get a better res picture until i receive the item. (I usually only buy from the USA for quick shipping times) I knew what most of the stuff was here and just to state, the big bag at the left looks to hold electrolytic capacitors.Quote from: daqq on February 04, 2013, 11:06:19 pmI didn't notice that that looked like a indicator

author: G7PSK
author_rank: Super Contributor
timestamp: February 05, 2013, 02:48:24 pm
content: Looks like a couple of spare plugs for a soldering iron or a CB mike in there as well.

author: mark-r
author_rank: Contributor
timestamp: February 05, 2013, 05:49:53 pm
content: You have to wonder why someone would buy one flameproof resistor then not use it

author: Amarbir[Lynx-India]
author_rank: Frequent Contributor
timestamp: February 05, 2013, 05:56:22 pm
content: Quote from: IonizedGears on February 04, 2013, 09:51:57 pmHi ,Most of the time its good to have a Handy component tester with you .That 20 dollar component tester that i am markus are discussing is a great thing for this .The IC could be standard TTL/CMOS 7400/4000 Types and might be some linears .These Ic can be tested fairly easily with a EPROm programmer with logic ic testing capability sir

author: IonizedGears
author_rank: Regular Contributor
timestamp: February 05, 2013, 07:29:11 pm
content: Wait, by what do you mean components tester? Because I have a fluke 87v for most things and I only need to get an oscilloscope and lcr meter. I had no idea you could test ics with eeproms... Hmmm

author: IonizedGears
author_rank: Regular Contributor
timestamp: February 05, 2013, 07:32:47 pm
content: I was surprised to see that off the shelf general resistors could be flame proof? Does it have a rating for what temp and how long it can resist?

author: KeithBrown
author_rank: Contributor
timestamp: February 06, 2013, 04:37:31 pm
content: The "clock dial" thing may well be a turns-counting dial. They can be quite pricey. And the possible termination on the BNC Tee may instead be an RCA phono jack to BNC adapter.

author: IonizedGears
author_rank: Regular Contributor
timestamp: February 06, 2013, 08:25:26 pm
content: The parts came in today so i got higher res pictures. The knobpot turns out to be a very high resolution potentiometer. So now, can you guys tell me if 21 USD was a good price for all this? Oh an the picture named parts, can anyone please tell me what a deviation monitor, those blue parts, and what those two grey parts are?

author: IonizedGears
author_rank: Regular Contributor
timestamp: February 06, 2013, 08:26:25 pm
content: Wouldn't allow the third photo for being too large. Here.

author: mark-r
author_rank: Contributor
timestamp: February 06, 2013, 08:50:26 pm
content: The deviation meter will just be a normal centre-zero moving coil meter with a custom label to suit whatever it was used for. The blue parts look a bit like little PCB mount switches which should be easy to tell by whether they have a definite click action if you push it!

author: bitwelder
author_rank: Super Contributor
timestamp: February 07, 2013, 06:34:12 pm
content: Some of the ICs are 30+ years old, being dated '77/'78/'80

author: 6502nop
author_rank: Regular Contributor
timestamp: February 07, 2013, 11:31:46 pm
content: @bitwelder:So? There's a light bulb in a San Francisco firehouse that's over 100 years old and still glowing. The only components I've run into that have a shelf life are capacitors. And don't get me started on the astronomical prices audiophile musicians are paying for old JRC op-amps for their rigs.@mark-r:You're spot-on with that meter, but I don't see any tactile elements on the top of the blue things (there seem to be small black spots on the bottoms, though - maybe the leads were bent in the wrong direction?).@Ionized:Could you ohm out those blue things? Maybe pull any numbers off of them?Also, those two yellow-tan colored DIPs in your IC collection are NOT ICs - they're resistor packs/arrays. The 14/16 is the pin count, don't know what the middle 001/002 is (maybe the internal connection type), and the 331 = 330 ohms.See my attached diagram of how they're used, and how to test your meter.And because I know you're going to ask, those "flameproof" resistors are now called "Fusistors". If I remember this correctly, RCA had a chasis that had this nasty habit of burning down people's houses (CTC-24/25?). Anyway, they traced the problem to a power resistor that got so hot it ignited, burned, and set fire to other components in the vicinity. They set fire to their friends, and so on, and so on - next thing you know, you've got a Charlton Heston action thriller. I seem to remember an article in eitherRadio ElectronicsorPopular Whateverthat showed how to build a fire alert systemfor your TV.So, RCA designed a resistor with a built-in fuse that would open before it got even close to the ignition point, thus it was "flameproof". You don't see them much anymore, as power levels have dropped to the point that this problem seldom occurs (except in China). It's still nice to have a few 2 or 5 watters lying around...nop

author: IonizedGears
author_rank: Regular Contributor
timestamp: February 08, 2013, 12:51:03 am
content: @6502nopWell i thought that resistors in arrays only came in as sip packages or SMD dip packages. Guess these were made before the major switch to SMD. Hmm, i thought that being flameproof it meant the resistors could be torched without igniting, guess i was wrong. The blue components turn out to be dome buttons but i have no idea why the leads would be bent that way (Maybe they were for some custom product?) Hmm, they just keep adding different variants of resistors aren't they, memristors, thermistors, fusistors, etc. Why can't they come up with original names?

author: mark-r
author_rank: Contributor
timestamp: February 08, 2013, 07:13:58 pm
content: The ICs are probably of more historical interest than any real use these days. It's pretty much all LS TTL and 4000 series CMOS that would have been used as glue logic in digital and computer boards of the day. They'll probably be pulls from scrap boards - they were available from advertisers in magazines and were a cheap source of logic chips for the hobbyist. The uPD416C is equivalent to the 4116, a 16Kx1 DRAM used in lots of 80s computers (but you've only got two so only useful if you have a 2-bit processor!). ECG6508 is a 1Kx1 SRAM, but again one on it's own won't be much use. 4000 series CMOS is still useful, but LSTTL is a bit old-hat, you'd more likely use HC, HCT or whatever now but still handy for testing ideas on breadboard. The 2 uA723 chips a classic voltage regulators, industry standard in their day but I don't know if you'd design them into a new project.

author: KeithBrown
author_rank: Contributor
timestamp: February 08, 2013, 07:56:23 pm
content: But you might be in great shape for the 7400 contest! Keep an eye onhttp://dangerousprototypes.com/category/7400-contest/, especially in the fall!

author: IonizedGears
author_rank: Regular Contributor
timestamp: February 09, 2013, 03:23:28 am
content: @KeithWait, what are the rules etc? I might want to try it out but the link you sent just sent me to the entriesWhat are the prizes aswell because if it is something good I will definitely try.

author: KeithBrown
author_rank: Contributor
timestamp: February 09, 2013, 05:37:38 am
content: This link might be more useful:http://dangerousprototypes.com/forum/viewforum.php?f=62&sid=6fa4b1bbd16e1d3f9afaa456b4e79337. It is their forum, and people there are asking about the next one. There is also a section right here about contests:https://www.eevblog.com/forum/contests/where there is some mention of it. I think you'll just have to keep your eyes open (and look at what you have and plan, plan, plan...)