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Search: Posts Made By: linuxguru
Forum: General Capacitor Questions & Issues 05-07-2017, 09:24 AM
Replies: 4
Views: 1,046
Posted By linuxguru
Re: Reliable Sources for Nichicon MUSE Capacitors

FWIW, I've measured the tan(delta) of various Nichicon MUSE series caps including the flagship KZ, and they were average - around 1 to 2% in most cases. Some generic low-ESR caps from other...
Forum: General Capacitor Questions & Issues 05-07-2017, 09:07 AM
Replies: 67
Views: 18,278
Posted By linuxguru
Re: KZG - KZJ - Same Electrolyte

I don't know if the origin (manufacturing plant) of the electrolyte and foil have a bearing on reliability, but it seems that some batches of KZGs don't fail as much as others. KZE and KZN also...
Forum: General Computer Discussion 03-06-2017, 07:48 PM
Replies: 2
Views: 870
Posted By linuxguru
Re: Tethering for smartwatch phones

The capability has existed for maybe 10-15+ years in phones, either through Bluetooth Dial-Up Networking (commonly found in Nokia 2G and later phones) or through Wi-Fi hotspot functionality (aka...
Forum: General Computer Discussion 03-05-2017, 06:02 PM
Replies: 33
Views: 2,943
Posted By linuxguru
Re: The 2017 Operating System Thread

Nobody using Fedora? I'm at F25 x86_64 on most of my daily-use Core 2 laptops, with F21 or F24 on a few. Of course, I got rid of the stock UI/WM and replaced it with XFCE or LXDE. Lower-spec and...
Forum: General Electronics Technical Discussion 11-05-2016, 01:30 AM
Replies: 10
Views: 1,587
Posted By linuxguru
Re: Carbon film vs metal film resistors

Correct - the greatest contribution to resistor inductance probably comes from the leads and end-caps. If they contain any ferromagnetic material (iron, steel, nickel, cobalt, etc.), their relative...
Forum: General Capacitor Questions & Issues 09-17-2016, 05:53 PM
Replies: 18
Views: 2,064
Posted By linuxguru
Re: Observations on cap composition and stability

I suppose it's a bit early to take a call on reliability, but Samyoung seem to have some claimed 5000 hour, 105c, moderate/high ripple-current, high-voltage electrolytics. I have some Samyoung NFK...
Forum: General Computer Discussion 07-19-2016, 11:36 AM
Replies: 40
Views: 3,893
Posted By linuxguru
Re: Problems with trying Ubuntu 16.04 LTS

May be true of the stock Debian distro, but there are derivative distros which don't require any shell use at all. For a newbie, Knoppix 7.4 (which is basically a read-only live DVD Debian-derived...
Forum: General Computer Discussion 06-29-2016, 01:52 AM
Replies: 34
Views: 6,893
Posted By linuxguru
Re: Old laptop Review (well, RANT): Lenovo Thinkpad T60

I snagged a T61p with nVidia Quadro FX 570M, 1920 x 1200 WUXGA panel, T7700 Merom C2D, 7200 rpm 16 MB cache HDD, new 3-cell battery, 90W adapter, Targus carrying case - not free, but inexpensive...
Forum: General Capacitor Questions & Issues 05-09-2016, 08:23 PM
Replies: 22
Views: 2,173
Posted By linuxguru
Re: motherboard cap question

Panny FL doesn't fail easily unless there is a combination of heat *and* high ripple current, in which case it can bulge and spill some thick black goo. If they look OK, I'd leave all the FLs alone,...
Forum: Abit - Asus - Aopen 05-06-2016, 11:15 PM
Replies: 4
Views: 2,115
Posted By linuxguru
Re: Recapping of Asus P5B

At first glance, they looked like polymers of either Nichicon or some lesser-known off-brand. On second glance, it looks like it could be Panasonic FL (electrolytic) in clear lacquer finish. If so,...
Forum: General Capacitor Questions & Issues 04-12-2016, 07:41 PM
Replies: 14
Views: 2,867
Posted By linuxguru
Re: KZG 6.3v 820uf replacement

Thanks, I'll mop up the NOS lot (not many, but enough for some critical 8 mm recaps including mini-ITX Atoms) today.
Forum: General Capacitor Questions & Issues 04-12-2016, 09:59 AM
Replies: 14
Views: 2,867
Posted By linuxguru
Re: KZG 6.3v 820uf replacement

It has now completed several hours of burn-in running Memtest86 without a single bit-error - previously, it used to throw up a random error or two on every pass. I'd recommend KZV as an 8mm...
Forum: General Capacitor Questions & Issues 04-12-2016, 06:22 AM
Replies: 14
Views: 2,867
Posted By linuxguru
Re: KZG 6.3v 820uf replacement

11 years on the shelf, while still retaining spec., is no mean feat. For at least part of that time, it has been stored in sideways position, when the electrolyte no longer seals the lower bung and...
Forum: General Capacitor Questions & Issues 04-12-2016, 12:10 AM
Replies: 14
Views: 2,867
Posted By linuxguru
Re: KZG 6.3v 820uf replacement

It's possible that there have been failed KZVs in hot Prescott SFF VRMs, but I haven't actually seen any failed KZVs first-hand so far, but then again, I haven't seen too many KZVs at all. They were...
Forum: General Computer Discussion 04-11-2016, 05:56 PM
Replies: 14
Views: 1,960
Posted By linuxguru
Re: Another RetroPuter, Compaq DeskPro 5100 Workstation

There's a fair chance that it has a Pentium with the FDIV bug (unless it has already been replaced under the Intel replacement program). If so, you can still contact Intel and have it replaced with a...
Forum: General Capacitor Questions & Issues 04-11-2016, 04:15 PM
Replies: 4
Views: 1,246
Posted By linuxguru
Re: Ltec LZG

Size may not fit, but film capacitors like Wima MKS02 and MKS2XL will handily exceed the specs and durability of any electrolytic of value 1uF/50V.
Forum: General Capacitor Questions & Issues 04-11-2016, 04:10 PM
Replies: 14
Views: 2,867
Posted By linuxguru
Re: KZG 6.3v 820uf replacement

Has anybody found the datasheet of NCC KZV? The only ones I've found are references from KZG and KZJ datasheets that show KZV as being lower impedance than those two. It also seems to be a 2000-hr...
Forum: General Computer Discussion 03-31-2016, 12:40 AM
Replies: 34
Views: 6,893
Posted By linuxguru
Re: Old laptop Review (well, RANT): Lenovo Thinkpad T60

I rarely use it, but it's the easiest (and sometimes the only) way to browse and get files in and out of a Nokia smartphone (mostly a dinosaur now, but I still use an X2-01 for its 2-week standby...
Forum: General Computer Discussion 03-30-2016, 06:49 PM
Replies: 34
Views: 6,893
Posted By linuxguru
Re: Old laptop Review (well, RANT): Lenovo Thinkpad T60

Bluetooth was an option on most Thinkpads. I have a T42 (Centrino) with Bluetooth, and another T42 without. I also have a T400 (C2D) with Bluetooth. In general, if you're not going to use Bluetooth...
Forum: General Computer Discussion 03-26-2016, 11:59 PM
Replies: 34
Views: 6,893
Posted By linuxguru
Re: Old laptop Review (well, RANT): Lenovo Thinkpad T60

I wish we had that problem of plenty here. IIRC, the D620/630 are also magnesium-shell units with slightly smaller displays than the D820. The D630 is Socket-P, so it will accept a variety of Penryn...
Forum: General Computer Discussion 03-26-2016, 09:59 PM
Replies: 34
Views: 6,893
Posted By linuxguru
Re: Old laptop Review (well, RANT): Lenovo Thinkpad T60

I also have an X200 with a 2.4 GhZ ULV Core 2 Duo and a small SSD running Fedora 21 with XFCE. It's an extremely nifty browsing machine (nearly identical to the X201, except for the...
Forum: General Computer Discussion 03-25-2016, 02:56 AM
Replies: 34
Views: 6,893
Posted By linuxguru
Re: Old laptop Review (well, RANT): Lenovo Thinkpad T60

I just got a pre-owned Dell Latitude D820 with the WSXGA+ 1680x1050 screen and a Yonah Core Duo installed in the Socket M. It's about 8 years old, but still in mint condition.

I must say that the...
Forum: Troubleshooting Power Supplies and Power Supply Design 01-26-2016, 10:23 PM
Replies: 36
Views: 3,363
Posted By linuxguru
Re: Led lamp - won't work in cold enviroment

You probably don't want to use aqueous electrolytics (ultra-low ESRs) in which the water is likely to freeze. Older non-aqueous electrolytics like NCC LXV/LXY/LXZ or Nichicon PJ/PW or Panasonic FC,...
Forum: General Computer Discussion 01-04-2016, 12:51 AM
Replies: 135
Views: 14,084
Posted By linuxguru
Re: The 2016 Operating System Thread

Linux - various versions of Fedora from FC3 to F21, on various notebooks and desktops. One Pentium M notebook still has Xubuntu for i686 - it just works, and it has a full working Bluetooth stack...
Forum: General Computer Discussion 12-26-2015, 11:14 PM
Replies: 190
Views: 126,684
Posted By linuxguru
Re: Cleaning Motherboards - ATTN SMOKERS!!

Vaguely related - I just had an Acer desktop PC survive full immersion in silty river water for a period of 24+ hours in a recent flooding here. The machine had been disconnected and placed upright...
Showing results 1 to 25 of 500

 
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