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Search: Posts Made By: eccerr0r
Forum: General Electronics Technical Discussion 10-21-2021, 07:27 PM
Replies: 16
Views: 346
Posted By eccerr0r
Re: SPIM08HP 3.7V 16AH Battery which can handle 200 amp pluses Battery Hookup

You'll need to get to 1F or higher, 2F is probably good. I've found 0.22F to be insufficient and that's where my experimentation ended as getting these capacitors is costly, though technically I...
Forum: General Electronics Technical Discussion 10-21-2021, 10:35 AM
Replies: 7
Views: 144
Posted By eccerr0r
Re: AC / DC ADAPTER upgrade?

Typically you can tweak a PSU maybe 10% or so off of its original setpoint but realistically they were pretty much set in stone when initially designed. If you need a [email protected] PSU you may be able to...
Forum: General Computer & Tech Discussion 10-20-2021, 06:00 PM
Replies: 35
Views: 702
Posted By eccerr0r
Re: <play taps>RadeonHD 5770 dead at ... ~10?

DAMN.

This X800 sucks. Can't get full resolution multihead. Sigh. I could run at reduced resolution on my LCDs...

no way.

Ugh...need to find another card...
Forum: General Computer & Tech Discussion 10-19-2021, 11:35 AM
Replies: 35
Views: 702
Posted By eccerr0r
Re: <play taps>RadeonHD 5770 dead at ... ~10?

How much would a RadeonHD 6450 be worth?

Seems like a crappy 64-bit card. Ugh. Really should say "never again" after experimenting with them alas dire times call for dire actions...if it were...
Forum: General Electronics Technical Discussion 10-19-2021, 08:53 AM
Replies: 5
Views: 169
Posted By eccerr0r
Re: Theory on Negative Voltages Please...

Forget power supplies and use batteries to think about them. As said, negative voltages are based on which your reference point is.

After understanding that, then go back to power supplies. Do...
Forum: General Electronics Technical Discussion 10-18-2021, 11:07 PM
Replies: 16
Views: 346
Posted By eccerr0r
Re: SPIM08HP 3.7V 16AH Battery which can handle 200 amp pluses Battery Hookup

Well chances are getting these capacitors are likely as expensive or more expensive than a lithium ion pack nowadays just because they don't have as much use anymore after the proliferation of...
Forum: General Computer & Tech Discussion 10-18-2021, 10:54 PM
Replies: 35
Views: 702
Posted By eccerr0r
Re: <play taps>RadeonHD 5770 dead at ... ~10?

need to get my voodoo3 back and sell that to fund a new pcie card.
sigh, have only a small pile of crappy pci and agp cards now...
Forum: General Electronics Technical Discussion 10-18-2021, 06:05 PM
Replies: 16
Views: 346
Posted By eccerr0r
Re: SPIM08HP 3.7V 16AH Battery which can handle 200 amp pluses Battery Hookup

That sure doesn't matter whether you use a lead acid battery or a lithium ion. In fact using a low esr capacitor limits the total energy dissipated by the transistor, which helps protect it too...
Forum: General Computer & Tech Discussion 10-18-2021, 05:19 PM
Replies: 35
Views: 702
Posted By eccerr0r
Re: <play taps>RadeonHD 5770 dead at ... ~10?

Damn, surplus shop had no PCIe GPUs, only had one AGP. Grr...
Forum: General Electronics Technical Discussion 10-18-2021, 05:16 PM
Replies: 16
Views: 346
Posted By eccerr0r
Re: SPIM08HP 3.7V 16AH Battery which can handle 200 amp pluses Battery Hookup

those crazy chinese welders figure it's cheaper to use a car battery over getting a 1F low esr capacitor, and then the crazy americans get the bright idea of using lithium ion, iron phosphate no...
Forum: General Computer & Tech Discussion 10-17-2021, 11:01 PM
Replies: 35
Views: 702
Posted By eccerr0r
Re: <play taps>RadeonHD 5770 dead at ... ~10?

The RadeonHD 3650 died faster than the 5770. Lasted ⅓ as long IIRC...
Then again the 3650 will POST still. The 5770 is DIW.
Forum: General Computer & Tech Discussion 10-16-2021, 11:17 PM
Replies: 35
Views: 702
Posted By eccerr0r
Re: <play taps>RadeonHD 5770 dead at ... ~10?

Yeah that card died, though the 'new' fan seemed to push more air. Pretty much was up to the heatsink and there was no way to get another thicker hs there - more pcie cards are coming...

No, not...
Forum: General Electronics Technical Discussion 10-16-2021, 06:03 PM
Replies: 55
Views: 1,660
Posted By eccerr0r
Re: Has anyone had issues with Rayovac Alkaline batteries leaking

The mains powered smoke alarms I have check their batteries, had to replace them several times now after incessantly beeping...

... and I think they do stop beeping if I simply remove the...
Forum: General Electronics Technical Discussion 10-15-2021, 10:12 PM
Replies: 55
Views: 1,660
Posted By eccerr0r
Re: Has anyone had issues with Rayovac Alkaline batteries leaking

Yes typically you could use a lithium thionyl chloride or lithium iron sulfide primary cell as they have much higher specific energy (but not specific power) so you never need to change them.

TBH...
Forum: General Computer & Tech Discussion 10-15-2021, 08:22 PM
Replies: 35
Views: 702
Posted By eccerr0r
Re: <play taps>RadeonHD 5770 dead at ... ~10?

I'll try to hunt for one for now, just hope to find one faster than the onchip 2nd gen for not much.
So far the X800 won't allow me to passthrough to the onboard output, probably have to use the gpu...
Forum: General Computer & Tech Discussion 10-15-2021, 04:29 PM
Replies: 35
Views: 702
Posted By eccerr0r
Re: <play taps>RadeonHD 5770 dead at ... ~10?

Yeah all 5 of those dead GPUs were acquired new... So I've been having bad luck with GPUs?

Currently functional PCIe GPUs I have left are an X800 and a G210. Neither are opencl though the X800...
Forum: General Computer & Tech Discussion 10-15-2021, 10:01 AM
Replies: 35
Views: 702
Posted By eccerr0r
Re: <play taps>RadeonHD 5770 dead at ... ~10?

so now I've had a dead diamond hd5770, sapphire hd3650, pny mx440, and a foxconn G965 (yes onboard)... maybe more... nforce board...

hmm.

the 5770 was "fast enough" ... would use the x800 but...
Forum: General Computer & Tech Discussion 10-15-2021, 12:57 AM
Replies: 35
Views: 702
Posted By eccerr0r
Re: <play taps>RadeonHD 5770 dead at ... ~10?

Yeah don't know yet what I want to do yet. One last experiment before declaring last rites but probably it's time to get another. Not sure if I want to get a 64-bit card yet, I think I can get one...
Forum: General Computer & Tech Discussion 10-14-2021, 07:43 PM
Replies: 35
Views: 702
Posted By eccerr0r
<play taps>RadeonHD 5770 dead at ... ~10?

Well... it was a good run after 10 years I think.

My computer with the Diamond branded RadeonHD 5770 crashed and screen corrupted an hour ago and couldn't boot my machine with it installed anymore...
Forum: Troubleshooting Game Consoles & Other Weird Devices 10-13-2021, 02:08 PM
Replies: 89
Views: 12,057
Posted By eccerr0r
Re: Post your worthless and/or pointless repairs

Amplifier in those speakers a single ended (with dc blocking capacitor), bridge, or bipolar driver? Highly doubting bipolar but bridge is possible, else cheaper single ended...

Suspecting the...
Forum: Troubleshooting Game Consoles & Other Weird Devices 10-13-2021, 12:41 AM
Replies: 89
Views: 12,057
Posted By eccerr0r
Re: Post your worthless and/or pointless repairs

Nice... I tend to bin small speaker enclosures with bad drivers, though I have repaired one speaker with bad tinsel wire... fixed with homemade tinsel wire...
Forum: General Electronics Technical Discussion 10-11-2021, 08:34 PM
Replies: 8
Views: 373
Posted By eccerr0r
Re: My Uni-T died... looking for a replacement

sigh. My hacked Mastech (with a data logging port) died. Now where can I get another cheap DMM that has logging or easily hacked to log. Else I might have to hack my other meter (Tenma) with...
Forum: General Electronics Technical Discussion 10-10-2021, 04:45 PM
Replies: 55
Views: 1,660
Posted By eccerr0r
Re: Has anyone had issues with Rayovac Alkaline batteries leaking

I had a red HFT alkaline PP3 that actually *exploded* leaving bits of the cell nearby...

Speaking of batteries, I have a bench DMM that uses 6xC (UM2) batteries, I wonder what's the best...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 10-07-2021, 08:21 PM
Replies: 8
Views: 337
Posted By eccerr0r
Re: Radio Shack 2200813 29 range DVM

Does the meter otherwise work on voltage, resistance modes?

Is that 90 ohms measured out of circuit?

What does the meter read if you pass 20mA in it with that 90 ohm resistor in it?

Without...
Forum: General Electronics Technical Discussion 10-07-2021, 06:26 PM
Replies: 55
Views: 1,660
Posted By eccerr0r
Re: Has anyone had issues with Rayovac Alkaline batteries leaking

Yeah the AA 14500 NiZn's I had were only like 900mAh. Total crap. They need to be in SMPS buck/boost with BMS. At 1.5Wh it's not way too bad though 2.4Wh NiMH is typical...

The charger...
Showing results 1 to 25 of 500

 
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