Timeline for Hot capacitors: Is that a problem?
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| Jul 8, 2011 at 16:10 | comment | added | Kevin Vermeer | @Andreja - I have no scope on my bench at home yet; I'm too spoiled with stuff at my university and at work. It's impressive what you can do with the tools you have! Makes me wonder if I really need to buy myself a scope... But Fake Name is right, you can't analyze this stuff with your DMM. | |
| Jul 8, 2011 at 10:55 | comment | added | BarsMonster | AndrejaKo: Get Rigol DS1052 form China for 350$, and hack it to 100Mhz, and you will have unbeatable performance/$. I personally own one, and it's just perfect. | |
| Jul 8, 2011 at 9:35 | comment | added | AndrejaKo | @endolith The problem here is that old scopes tend to keep their value (made in the USSR ones are around 100€/$150) and new ones are very expensive. For example Atten AT7328 2x20 MHz analogue scope is 377€ (~$550) new and is among the cheapest I could find here! In the end I'll most likely import a scope from EU. But enough of my whining... | |
| Jul 8, 2011 at 3:58 | comment | added | Connor Wolf | any HF stuff of interest here will be far above what a multimeter or soundcard scope will work for. Just stick a ceramic across the electrolytic and see what happens. | |
| Jul 8, 2011 at 3:51 | comment | added | endolith | @AndrejaKo in the US you can get an old scope cheap on eBay. not sure about Serbia. | |
| Jul 8, 2011 at 1:19 | comment | added | AndrejaKo | @Kevin Vermeer I don't have a real scope and "probe" for my sound card based one has fallen apart yesterday :(. | |
| Jul 8, 2011 at 1:14 | comment | added | Kevin Vermeer | @Andreja - Use your oscilloscope (hopefully with an FFT option) not your multimeter to determine the frequency content of a signal. Of course, if you've got a spectrum analyzer, use that. | |
| Jul 8, 2011 at 1:05 | comment | added | AndrejaKo | The polarity is fine and the are at 11.8 V, which is much lower than the 25 V (my other option are 35 V non low-ESR) they are rated at. As for high frequencies, my multimeter is showing 0.625 kHz on them, but it's been known to show all kinds of things on frequency range. I'll see if ceramics help. | |
| Jul 8, 2011 at 0:55 | history | answered | BarsMonster | CC BY-SA 3.0 |