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Search: Posts Made By: eccerr0r
Forum: General Electronics Technical Discussion Today, 03:40 AM
Replies: 41
Views: 1,747
Posted By eccerr0r
Re: FM Jammer project

Most modern day tuners are PLL locked, even with an analog tuning dial they lock onto frequency very well. It's only the older AFC type tuners that will drift slightly.

So if the guy will retune...
Forum: Troubleshooting Power Supplies and Power Supply Design Today, 03:32 AM
Replies: 1
Views: 23
Posted By eccerr0r
Re: Inverter is receiving power, but does not supply power to outlets?

It should say watts? volts on output theoretically should be constant no matter what the load is, until it's overloaded.

so, fuse on secondary?
gfci?
burned output transistors?
so many...
Forum: General Computer & Tech Discussion Today, 12:56 AM
Replies: 21
Views: 439
Posted By eccerr0r
Re: Why Lubuntu?

I'm still using Gentoo because of its customization and I don't like reinstalling... but it comes at a heavy CPU/RAM/disk cost. Very heavy cost...

I still am actively using an install I set up...
Forum: General Electronics Technical Discussion Today, 12:43 AM
Replies: 41
Views: 1,747
Posted By eccerr0r
Re: FM Jammer project

I think a lot of the FM transmitters out there are pretty crappy in terms of frequency lock. A lot will drift and drift badly. I currently have three FM transmitters:

one is a little box with an...
Forum: Equipment Usage, Soldering, Techniques, and Reviews Yesterday, 11:27 PM
Replies: 9
Views: 74
Posted By eccerr0r
Re: Potentially Toxic Situation

The amount of volatilization of rosin is extremely low, and you're not getting the PAHs when there's no heat involved. PAH's is a component of "magic smoke" so hopefully this isn't what it is...
Forum: Equipment Usage, Soldering, Techniques, and Reviews Yesterday, 09:55 PM
Replies: 9
Views: 74
Posted By eccerr0r
Re: Potentially Toxic Situation

When doing electronics soldering, the smoke and odor is made up mostly of burnt or vaporized rosin or finger oils that might have been left on the tip when it was handled cold. Neither of which...
Forum: General Electronics Technical Discussion 02-22-2020, 01:24 PM
Replies: 3
Views: 72
Posted By eccerr0r
Re: Where to buy shielded cables like this one?

I don't know about 75-ohm (RG179?) typical for video, but RG174 which is 50 ohm and available everywhere is usually really cheap if you want to make your own cables.
Forum: General Electronics Technical Discussion 02-21-2020, 07:38 PM
Replies: 1
Views: 56
Posted By eccerr0r
Re: New TME mod idea.

who knows, depends on the PLL chip and how exactly it's prohibiting overclock...
Forum: General Electronics Technical Discussion 02-21-2020, 10:22 AM
Replies: 5
Views: 98
Posted By eccerr0r
Re: How do you bench test this type of USFF Desktop Power Supply

Hmm...well. I guess the said PSU has not been acquired and it would be difficult to see the board to make guesses at how to power it up. Then again, my most recent PSU attack was a server PSU power...
Forum: General Electronics Technical Discussion 02-21-2020, 02:41 AM
Replies: 5
Views: 98
Posted By eccerr0r
Re: How do you bench test this type of USFF Desktop Power Supply

Hmm...where (and what) is the standby power output...
Forum: Troubleshooting Power Supplies and Power Supply Design 02-20-2020, 01:24 AM
Replies: 53
Views: 634
Posted By eccerr0r
Re: DC Power Supply (DF1730SB-5A) Programmable LCD Reading Problem

The 7106's say ImBAD so they must have failed. *runs*

If you catch the segments on with the power off and capacitors discharged, try taking a piece of wire and shorting the "BP" signal to each of...
Forum: Troubleshooting Power Supplies and Power Supply Design 02-20-2020, 01:11 AM
Replies: 10
Views: 253
Posted By eccerr0r
Re: XFX 850w blown bridge rectifier.

Eh... no, math does not check out. You're not going to even remotely halve system power loss by doubling the diodes. You will save some power but it's a drop in the bucket.

However you will...
Forum: Troubleshooting Power Supplies and Power Supply Design 02-19-2020, 04:54 PM
Replies: 53
Views: 634
Posted By eccerr0r
Re: DC Power Supply (DF1730SB-5A) Programmable LCD Reading Problem

To swap between LED/LCD with the same board, the 7106 and 7107 are very much alike ... but are different!!! You need to board edit to swap between the two.

7106 pin 21 is an output used for the...
Forum: Troubleshooting Power Supplies and Power Supply Design 02-19-2020, 10:18 AM
Replies: 53
Views: 634
Posted By eccerr0r
Re: DC Power Supply (DF1730SB-5A) Programmable LCD Reading Problem

So the segments are all on when the PSU is off? That sounds like bad LCD.

The pinouts of the ICL7106 and ICL7107 are so much alike but the pinouts of the LCD modules and LED 7-segment modules are...
Forum: Troubleshooting Power Supplies and Power Supply Design 02-19-2020, 02:25 AM
Replies: 53
Views: 634
Posted By eccerr0r
Re: DC Power Supply (DF1730SB-5A) Programmable LCD Reading Problem

weird, and the segments turn off when power isn't connected?

LCD failure is like very low on my suspects unless all the segments stay on without bias...

Now getting one of those through hole...
Forum: Troubleshooting Power Supplies and Power Supply Design 02-18-2020, 10:27 PM
Replies: 53
Views: 634
Posted By eccerr0r
Re: DC Power Supply (DF1730SB-5A) Programmable LCD Reading Problem

I'd seriously suggest not to remove the LCD if you can avoid it; these are exceedingly fragile - though you may be forced to in this case. I also find it very strange both displays failed in the...
Forum: Troubleshooting Power Supplies and Power Supply Design 02-18-2020, 12:09 AM
Replies: 53
Views: 634
Posted By eccerr0r
Re: DC Power Supply (DF1730SB-5A) Programmable LCD Reading Problem

I still don't get how the decimal points and especially the colon is lit... I would have thought the colon should be tied to BP to ensure it never comes on. Weird.

I've seen a lot of bad decimal...
Forum: Troubleshooting Power Supplies and Power Supply Design 02-14-2020, 04:36 PM
Replies: 10
Views: 153
Posted By eccerr0r
Re: speaking of car battery chargers...

But are they all SMPS now?
Forum: Troubleshooting Power Supplies and Power Supply Design 02-14-2020, 04:35 PM
Replies: 10
Views: 153
Posted By eccerr0r
Re: speaking of car battery chargers...

Don't tell me these aren't charged by the main pack...
Forum: General Electronics Technical Discussion 02-14-2020, 01:58 PM
Replies: 21
Views: 554
Posted By eccerr0r
Re: Oscilloscope Advice....

But then you'd be lying because you actually want to look at 100MHz noise... :-p
Forum: Troubleshooting Power Supplies and Power Supply Design 02-14-2020, 12:54 PM
Replies: 10
Views: 153
Posted By eccerr0r
speaking of car battery chargers...

I suspect someday these car battery chargers will become as obsolete as vacuum tubes (since everyone would be driving electric cars that require power inputs rated in the kilowatts), but for now they...
Forum: General Electronics Technical Discussion 02-11-2020, 04:15 PM
Replies: 21
Views: 554
Posted By eccerr0r
Re: Oscilloscope Advice....

Honestly I think the higher MHz sometimes simply doesn't matter that much.

Back in the day when radio was high tech electronics, nobody cared that they could not have an oscilloscope that could...
Forum: General Electronics Technical Discussion 02-11-2020, 12:53 PM
Replies: 21
Views: 554
Posted By eccerr0r
Re: Oscilloscope Advice....

Dangit, the Tektronix 465 IS portable as much as the original Compaq!
(Along with my Tektronix 2440 and 2465...)

:D

Sigh...expectations change so much over time...
Forum: General Computer & Tech Discussion 02-08-2020, 08:54 PM
Replies: 37
Views: 1,333
Posted By eccerr0r
Re: A Colossal HDD Failure

My 2TB disks are getting up there in hours, have many of them around the 60K mark now. Getting close to my personal record of the 120G disks that are around 70K hours and still working. Currently...
Forum: Troubleshooting Power Supplies and Power Supply Design 02-06-2020, 06:33 PM
Replies: 10
Views: 253
Posted By eccerr0r
Re: XFX 850w blown bridge rectifier.

Okay that's not a good sign if it needed a heatsink stock, you will need to locate new 15A units if you want to run at 850W again, else you're stuck to do 250-300W until you do so.
Showing results 1 to 25 of 500

 
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