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Pesonally, I've always liked the idea of using a soundcard as a very basic, though limited scope. You don't always need a high end scope and using a soundcard saves some $$$. Plus just about every PC

Yeah I figure with the soundcard o-scope software I could probably get some somewhat decent readings but really that's not my goal. I'm more or less just looking to use mine for reference. ie spotting

The characteristic impedance does not change (much) with frequency, not at all with ideal coax. ;-) If you have an infinitely long piece of coax and connect your ohmmeter you will read 50ohms (or

I concur. "Real" probes use lossy coax so as to reduce reflections; and the 10: divider at the probe tip has a resistor from center conductor to braid, and a resistor in parallel to an adjustable

LOL! You got that right! It might look neat, but it is pretty darn expensive :-( Chris <stefan_trethan@...> wrote: the has

Okay, I know you guys are probably wetting your pants laughing at me because I am so excited about a VERY CRUDE scope, but it is impressing me more and more. I wanted to check the actual ON time of a

Well, it's not like you are unaware of the effects mains voltage has inside computers. ST

Hi, Here's a link to the data sheet. It explains everything about the chip. <http://www.allegromicro.com/datafile/970702.pdf#search=%22sla7078mpr%22> Mel

Hi all, We are having problems with our ISP while setting up a wireless network, so I am terribly sorry if you get delayed mail, etc. I will post once in a while because i would be using someone

Gotcha, My probes have the switch for 1:1 and 10:1. So, I could use the little circuit board I made up and just add a BNC connector to it along with an enclosure box and I should be in good shape. For

Most likely you have either 1:1 probes, which are a straight through cable, or 10:1 probes, which have a frequency compensated divider inside. With the probably low input impedance of the soundcard

Strange question - I know :-( Let me explain. I will have to tinker with this soundcard "Scope" for a while till I can afford something better. Right now I am using a couple of wires - 8 diodes - 2

Steve, it appears to be freeware as it doesn't seem to have any indications of registration etc. I dunno to be honest - it was free to download - it didn't require registration - and I do beleive is

Hi I had made a circuit some time back for curve tracer, but it fed into a scope. The circuit was also verified by the group. The problem is that though I would get the look of the curve the values in

No, it would be considered a spectrum analyzer. ST

Hey guys, I've been reading the latest posts about various scopes and the pro's and con's of each and that got me thinking about a (hopefully) small project of a gain vs. frequency meter. The device

There was some discussion on curve tracers in here a while back. I forget which kind were being talked about. There are basically two kinds... One is the sort that will display useful curves for

Not the caps, though. I had one die on me here a while back, and there really wasn't all that much to it -- the chip itself and maybe a couple of buffers and such, and the rest of what was on that

Is the old version freeware now, or still shareware? Has anyone tried modifying a sound card to take DC input? Steve Greenfield PS please don't forget to trim <lcdpublishing@...> wrote: