Forum: General Computer & Tech Discussion
08-11-2022, 11:21 AM
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Replies: 3
Views: 120
Re: Motherboard diagnostic LED states
I used to have an old P4 board (MSI branded ATX, desktop board) that had 4 diagnostic LEDs on the back panel that counted from 0 (all off) to 15 (all on) as it went through POST, each meaning...
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Forum: General Electronics Technical Discussion
08-10-2022, 05:09 PM
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Replies: 13
Views: 269
Re: Converting +/- 5v to a Usable Hz Signal
Sounds like you need someone to do it for you, I think we've given all the clues we can give without having access to the actual hardware... This won't be a "buy this connect that" solution.
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Forum: General Electronics Technical Discussion
08-10-2022, 07:45 AM
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Replies: 13
Views: 269
Re: Converting +/- 5v to a Usable Hz Signal
You can't fix designs you don't have information to fix... and since the main reason for having the fan on is to cool it, just cool it like a CPU fan be damned with the noise or whatever issue those...
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Forum: General Electronics Technical Discussion
08-09-2022, 05:24 PM
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Replies: 13
Views: 269
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Forum: General Computer & Tech Discussion
08-09-2022, 05:21 PM
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Replies: 17
Views: 348
Re: laptop vs desktop rust spinner longevity
If someone's using a laptop on their lap then I don't care how well you can keep your lap still, there will be movement. Not to also mention laptops tend to get hotter than desktop PCs (usually).
...
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Forum: General Computer & Tech Discussion
08-09-2022, 12:26 PM
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Replies: 17
Views: 348
Re: laptop vs desktop rust spinner longevity
Do these drives (scorpio blue, rosewell, momentus) last longer if they weren't in laptop situations?
None of my laptop drives (excluding so far: SSDs but offtopic) last long, but they were all in...
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Forum: General Computer & Tech Discussion
08-08-2022, 06:14 AM
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Replies: 17
Views: 348
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Forum: General Computer & Tech Discussion
08-08-2022, 12:22 AM
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Replies: 17
Views: 348
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Forum: General Computer & Tech Discussion
08-07-2022, 08:28 AM
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Replies: 17
Views: 348
Re: laptop vs desktop rust spinner longevity
anyone used a lot of 2.5" drives in their desktop/server machines?
Wonder because I'd think 2.5" drives need to be made at higher tolerances but yes, due to size, the drives are lighter and thus...
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Forum: General Capacitor Questions & Issues
08-06-2022, 08:36 AM
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Replies: 29
Views: 756
Re: Blown cap on old dwell gauge - kal equip 2851
cars don't use tachometers anymore?
hmm... electric cars wouldn't have tachometers I suppose but any gasoline ones it's still somewhat interesting information. Might not be useful information for...
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Forum: General Computer & Tech Discussion
08-05-2022, 09:39 PM
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Replies: 17
Views: 348
laptop vs desktop rust spinner longevity
Has there been a study on how durable laptop 2.5" vs desktop 3.5" hard drives? Also consider 2.5" SAS drives which were meant for server use...
The thing that I wonder about is whether or not...
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Forum: General Computer & Tech Discussion
08-01-2022, 07:07 PM
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Replies: 200
Views: 294,135
Re: Cleaning Motherboards - ATTN SMOKERS!!
Sometimes I wonder, which is worse - dried on HFCS soda versus sucrose soda. I think the latter might just chip off but water washes dried up HFCS soda pretty quickly...
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Forum: General Electronics Technical Discussion
08-01-2022, 04:37 PM
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Replies: 4
Views: 82
Re: Battery Charger - Transformer advice
Yeah the lacquer is a good idea, or you can just ignore it the buzz, it's not unexpected. My car battery chargers buzz, and I just use the noise as an indication it's on, as there's no other power...
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Forum: General Capacitor Questions & Issues
07-29-2022, 09:58 PM
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Replies: 13
Views: 257
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Forum: General Capacitor Questions & Issues
07-28-2022, 12:10 PM
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Replies: 13
Views: 257
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Forum: General Capacitor Questions & Issues
07-26-2022, 06:37 PM
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Replies: 10
Views: 306
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Forum: General Capacitor Questions & Issues
07-25-2022, 08:34 AM
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Replies: 10
Views: 306
Re: solid polymer electrolytic capacitor go boom?
hmm...also curious what happens if they get overheated or overvoltaged. Unlike a "wet" capacitor, they don't have a liquid to boil off so I can't extrapolate a regular aluminum wet capacitor over. ...
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Forum: General Capacitor Questions & Issues
07-25-2022, 07:12 AM
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Replies: 10
Views: 306
solid polymer electrolytic capacitor go boom?
Anyone had a solid polymer capacitor fail for whatever reason?
How do they fail? Do they explode, go open, short out, ?
How about for different reasons: forcing excessive ripple current,...
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Forum: General Capacitor Questions & Issues
07-24-2022, 07:16 PM
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Replies: 13
Views: 257
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Forum: General Capacitor Questions & Issues
07-24-2022, 08:34 AM
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Replies: 13
Views: 257
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Forum: Troubleshooting Game Consoles & Other Weird Devices
07-20-2022, 06:59 PM
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Replies: 10
Views: 321
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Forum: General Electronics Technical Discussion
07-14-2022, 06:00 PM
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Replies: 16
Views: 686
Re: resistors in parallel ?
in this case power and energy don't really matter, just take a fixed amount of time and the math works out.
This confusion is because some people equate amps (or amp hours) with, or as a proxy for...
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Forum: General Electronics Technical Discussion
07-13-2022, 07:53 AM
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Replies: 16
Views: 686
Re: resistors in parallel ?
I think the main reason to answer the way sam did is he was thinking about batteries and considering amps and not watts.
two 12V 1Ah batteries in series will give you 24V but still only 1Ah.
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Forum: Troubleshooting Power Supplies and Power Supply Design
07-05-2022, 08:11 PM
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Replies: 3
Views: 250
Re: Fastest way to ATX cuttoff
There's no way for a PSU to tell a difference from a semi-short and a very high load. Only way perhaps is to have a fast acting thermal camera that will shut down immediately if a hotspot is...
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Forum: General Capacitor Questions & Issues
07-01-2022, 08:16 AM
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Replies: 9
Views: 369
Re: 3300µF 450V caps...
how many µF is needed to not cause damage and make a difference :D ?
I think a 3.3mF could cause significant damage... granted you have to get unlucky in one direction, most of the cap is...
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