Hi, Dollar shops sometimes stock kitchen timers (1$) Try yr luck @ $shops MM ============...
40087
medmidas
gesigars
Aug 1, 2007 1:35 pm
Hi, WallMart do stock some digital LCD wrist watches, with 5 alarms. $7 ====================...
40088
orvillefpike
Aug 1, 2007 2:31 pm
Is there a program that can keep track of the flow of bytes for my high speed internet connection? There seems to be some sites, that I visit, that...
40089
lcdpublishing
Aug 2, 2007 9:14 am
Hi guys, On this new CNC conversion I am doing, I am probably going to use a number of devices (proximity switches etc.) that are 24 volt. I then need to...
40090
Shawn Standfast
sstandfast
Aug 2, 2007 9:46 am
Hi Chris, Sounds to me like a perfect time to us opto's. It provides isolation and they are really easy to use. How many devices are you going to connect?...
40091
Nelson Johnsrud
dbxprss
Aug 2, 2007 2:58 pm
Could someone please clarify capacitor value symbols for me? For instance, I am used to seeing things like "10uf" (10 microfarad) or "10pf" (10 picofarad). I...
40092
rtstofer
Aug 2, 2007 3:24 pm
... guessing it ... chart ... looking at. ... Certainly uF is common for microfarad as MAY be MF although I would want to check the context to be certain...
40093
Nuno T.
nuno_tv
Aug 2, 2007 3:37 pm
... at. "10n" means 10 nanoFarads "10MF" SHOULD mean 10 MegaFarads because of the big "M". Small "m" is for mili. But in this case means micro. They use the...
40094
John Popelish
jpopelish
Aug 2, 2007 3:50 pm
... (snip) ... n= nanofarads. 1 nF = 1000 pF = .001 uF MF (of MFD, and capitalization optional) is a pre-metric system label for microfarads, often seen on...
40095
Leon
leon_heller
Aug 2, 2007 3:56 pm
... From: "Nelson Johnsrud" <gop4evr@...> To: "Electronics 101" <Electronics_101@yahoogroups.com> Sent: Thursday, August 02, 2007 3:54 PM Subject:...
40096
Roy J. Tellason
rtellason
Aug 2, 2007 4:37 pm
... You might use something like the ULN2003, which I have a bunch of... Basically they're an array of darlington pairs with suppression diodes. I *think*...
40097
Roy J. Tellason
rtellason
Aug 2, 2007 4:39 pm
... Really old texts will sometimes use "MFD." for uF, or "MMFD" for pF. It's also been quite a number of years since I've seen parts that were actually ...
40098
Nelson Johnsrud
dbxprss
Aug 2, 2007 6:14 pm
... I thought that the n might be for nanofarads, but just was not 100% sure. I have also noticed that MF, mf, and mF seem to be used interchangably from one...
40099
Mike W
mikeyathotma...
Aug 2, 2007 6:46 pm
Don’t over think it, just 2 resisters (a voltage divider) and go straight in to your TTL (5 volt circuit) use a 1.2k resister from your 24 volt device, and a...
40100
rtstofer
Aug 2, 2007 8:06 pm
... straight in to your TTL (5 volt circuit) use a 1.2k resister from your 24 volt device, and a 330 ohm resister to ground, and take your 5 volt signal from...
40101
orvillefpike
Aug 2, 2007 11:43 pm
I have seen, in another forum, that you can restrict the use of internet in a "command" window using the "net user" instruction. There must be also a way to...
40102
Mike W
mikeyathotma...
Aug 3, 2007 1:01 am
HI Perhaps I do not quite understand the application. As far as different sources of power are concerned, it doesn’t matter as long as the ground is common...
40103
Mike Bronosky
brewski922
Aug 3, 2007 2:31 am
Both the resistor-divider and opto-isolator methods will work. The resistor-divider method "may" be less costly up-front but down the road it could by much...
40104
rtstofer
Aug 3, 2007 3:09 am
... The application is a machine tool with many different voltages present within the equipment. The idea is to interface limit switches and other inputs to...
40105
Mike Bronosky
brewski922
Aug 3, 2007 3:43 am
I can't speak for other flavors of Windoze but in the Win2000 screensaver there is a "3D Text (Open GL)". One of the displays is time. Say you go into it and...
40106
descorta6
Aug 3, 2007 8:27 am
Thanks Dave for your response. My comp broke down and I had to get the laptop up and running. Fortunately £105 and a comp engineer and 1-1/2 hours phone to...
40107
lcdpublishing
Aug 3, 2007 9:24 am
Thanks guys! Yes, this is for a little metal working lathe I am converting to CNC. Richard, knowing my history of letting smoke out of things, is on the right...
40108
Leon
leon_heller
Aug 3, 2007 9:38 am
... From: "lcdpublishing" <lcdpublishing@...> To: <Electronics_101@yahoogroups.com> Sent: Friday, August 03, 2007 10:23 AM Subject: [Electronics_101] Re:...
40109
lcdpublishing
Aug 3, 2007 11:02 am
Leon, it's the infamous 9x20. Mine is the Harbor Freight brand. Depending on how much "pleasure"; I get doing this conversion, I may scratch build another lathe...
40110
anding_eunding
Aug 3, 2007 12:01 pm
Hello, This might be of interest to electronics enthusiasts looking for an interesting project, an eBook about How to Build Your Own Radio Telescope. It's...
40111
Roy J. Tellason
rtellason
Aug 3, 2007 4:45 pm
... Hm, apparently for some odd reason I was assuming _outputs_ there instead of inputs... :-0 ... -- Member of the toughest, meanest, deadliest, most...
40112
rtstofer
Aug 3, 2007 5:12 pm
... instead of ... Heck, I'm thinking of optos before the ULN2803's for output. The more I consider the problem the more convinced I am that there should be...
40113
Roy J. Tellason
rtellason
Aug 3, 2007 5:24 pm
... On further reading I figure that both input and output are going on... FWIW, I have lots of optos, too. :-) More than I'll ever likely use, anyhow. ......
40114
Ken Stuempges
ozarks_hermit
Aug 4, 2007 4:28 am
Hi all My first post - and a question. I am making a small oscillator to drive an IGBT, which in turn will drive an ignition coil to generate hi-voltage...
40115
orvillefpike
Aug 4, 2007 2:38 pm
... just ... specs. ... It ... Shouldn't you put a "FreeWheel" diode between the emiter and collector of your IGBT, to save it from voltage kick-back?...
