Search found 266 matches

by AVGresponding
Thu May 15, 2025 4:30 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3580
Views: 1555592

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Anyone bought wafer switches lately? Had a look at some today for work (I've plenty of stock for personal use) and was shocked at the prices. £30-50 per wafer and £50-60 for the mechanism :shock: That's 5 to 10 times what the were last time I looked. Seriously considering a board full of DPCO relay...
by AVGresponding
Thu May 15, 2025 4:28 pm
Forum: Test Equipment
Topic: HP 204C
Replies: 74
Views: 7375

Re: HP 204C

MED6753 wrote: Thu May 15, 2025 12:39 pm So it appears that the only real solution is the purchase a proper hp branded spectrum analyzer. I'll put it on my "wish" list.
If you let me know what your approximate budget is, I'll keep an eye out and post any appropriate ones I see in the US, in Private Marketplace
by AVGresponding
Thu May 15, 2025 4:25 pm
Forum: Test Equipment
Topic: HP 211A
Replies: 72
Views: 18234

Re: HP 211A

Nixies? What are those? I haven't got any device with numitron/minitron displays. No, I don't want cockpit instruments nor petrol pumps, thank you very much. They do seem quite difficult to find. This thing is a real oddball, no manufacturers mark, probably an internal special or something. The tri...
by AVGresponding
Wed May 14, 2025 4:58 pm
Forum: Test Equipment
Topic: HP 211A
Replies: 72
Views: 18234

Re: HP 211A

Nixies? What are those?
IMG_20250514_174741361.jpg
by AVGresponding
Thu May 08, 2025 4:41 pm
Forum: Test Equipment
Topic: Post a picture of a cat
Replies: 243
Views: 132252

Re: Post a picture of a cat

Specmaster wrote: Fri Apr 11, 2025 2:24 pm Oh, but those photos are of an AMD AM5 socket and AMD Ryzen processor?
I'll be having to carefully not damage the bloody pins myself, soon enough; bought a R5 9600X on sale, will probably go for a Gigabyte mb with the B850 chipset
by AVGresponding
Thu Apr 17, 2025 3:30 pm
Forum: Test Equipment
Topic: Going free: Fluke 760A Voltage Calibrator
Replies: 45
Views: 7097

Re: Going free: Fluke 760A Voltage Calibrator

These are British roads, they aren't long and straight, for the most part, where you could hit cruise control and doze off. Our roads are very narrow by comparison, and demand constant attention, especially in remote areas like that. If it were a breeze to drive there and back, I'd have it myself.
by AVGresponding
Fri Apr 11, 2025 6:50 pm
Forum: Test Equipment
Topic: Post a picture of a cat
Replies: 243
Views: 132252

Re: Post a picture of a cat

So what was the outcome, new motherboard and processor? I take it that you were building a new computer so the motherboard was at fault. I think that they could have made the die of the processor larger and used the same pins that they used on earlier processors which had stood the test of time? No...
by AVGresponding
Fri Apr 11, 2025 9:45 am
Forum: Test Equipment
Topic: Post a picture of a cat
Replies: 243
Views: 132252

Re: Post a picture of a cat

So what was the outcome, new motherboard and processor? I take it that you were building a new computer so the motherboard was at fault. I think that they could have made the die of the processor larger and used the same pins that they used on earlier processors which had stood the test of time? No...
by AVGresponding
Wed Apr 09, 2025 4:32 pm
Forum: Test Equipment
Topic: HP 204C
Replies: 74
Views: 7375

Re: HP 204C

Cubdriver wrote: Tue Apr 08, 2025 5:15 pm Somewhere in the æther there is a pocket that's full of old style Clement cabinet feet and those tiny badges, as they so frequently are missing...

-Pat
A bag of 15 or so went on ebay for about 30 currency units a few weeks ago...
by AVGresponding
Wed Apr 09, 2025 4:30 pm
Forum: Test Equipment
Topic: Post a picture of a cat
Replies: 243
Views: 132252

Re: Post a picture of a cat

This is what happens:

Image
by AVGresponding
Sun Apr 06, 2025 10:48 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3580
Views: 1555592

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

It quenches the arc by removing heat, and also there's a chemical reaction making the metal-filler fused product highly resistive.
by AVGresponding
Sat Apr 05, 2025 9:31 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3580
Views: 1555592

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

All modern HRC fuses have some sort of filler for arc quenching. It shouldn't be sand: https://www.electricaltechnology.org/20 ... types.html
by AVGresponding
Wed Apr 02, 2025 4:42 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3580
Views: 1555592

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

How about, you don't get to touch anything beyond a litter-picker, until you've proved some minimal technical competency?
by AVGresponding
Sun Mar 30, 2025 5:36 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3580
Views: 1555592

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

gotta' admit that you brits did some limited episode series that were freakin' great. "I Claudius" and "Danger UXB" come to mind. had long given up hope that we would ever do similar.......until "band of brothers" came along. edit on second thought......wasn't the red ...
by AVGresponding
Sat Mar 29, 2025 4:50 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3580
Views: 1555592

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Can't believe you missed out This Island Earth. Didn't you ever wish you could order an interocitor?
by AVGresponding
Mon Mar 10, 2025 5:35 pm
Forum: Test Equipment
Topic: Recent Deep-Dive: Cassette Deck Maintenance and Calibration Resources
Replies: 4
Views: 1084

Re: Recent Deep-Dive: Cassette Deck Maintenance and Calibration Resources

These are excellent sources and resources. Still, tape is only interesting as a historical medium, and all possible effort should be directed towards transferring their content to ones and zeros and storing those on hard drives. I refer you to the honorable gentleman: https://external-content.duckd...
by AVGresponding
Tue Mar 04, 2025 6:22 pm
Forum: Test Equipment
Topic: Fluke 8125A
Replies: 48
Views: 16041

Re: Fluke 8125A

Those have been heavily compressed, to 0.75MB/image, and to have artefacts surrounding the lines. They appear to have been taken with an "iPhone X", so I would expect better. I can automatically improve the text and schematics, but the images don't improve. Is there any way of getting the...
by AVGresponding
Sat Mar 01, 2025 11:59 am
Forum: Test Equipment
Topic: Fluke 8125A
Replies: 48
Views: 16041

Re: Fluke 8125A

Here's the full set, hosted on servimg https://i49.servimg.com/u/f49/16/28/02/75/img_4610.jpg https://i49.servimg.com/u/f49/16/28/02/75/img_4611.jpg https://i49.servimg.com/u/f49/16/28/02/75/img_4612.jpg https://i49.servimg.com/u/f49/16/28/02/75/img_4613.jpg https://i49.servimg.com/u/f49/16/28/02/7...
by AVGresponding
Sat Mar 01, 2025 11:40 am
Forum: Test Equipment
Topic: Fluke 8125A
Replies: 48
Views: 16041

Re: Fluke 8125A

I uploaded the raw jpegs, no idea if the forum compresses them at all. Erik isn't set up for scanning, I'd guess he used his phone or a digital camera


EDIT: The forum definitely compresses the images, down from around 1.6MB to 240kB
by AVGresponding
Sat Mar 01, 2025 8:54 am
Forum: Test Equipment
Topic: Fluke 8125A
Replies: 48
Views: 16041

Re: Fluke 8125A

By useful coincidence: https://www.youtube.com/watch?v=CXSojAGOlDY&list=WL&index=94 Typical yootoob:takes forever to say something. How long did he spend twittering about capacitor leakage measurements? Nonetheless: he indicated the big resistors were heaters for when it was cold. Possible,...
by AVGresponding
Mon Feb 24, 2025 5:44 pm
Forum: Test Equipment
Topic: TEK RM5110
Replies: 36
Views: 16478

Re: TEK RM5110

Is it not possible to make your own extender boards for a reasonable cost? Anyone asking $170 must be a damn crack-head
by AVGresponding
Mon Feb 24, 2025 5:41 pm
Forum: Test Equipment
Topic: Fluke 8125A
Replies: 48
Views: 16041

Re: Fluke 8125A

Did he indicate any reason for swapping the transistors? That might point to root cause failures elsewhere. I saw a little of the scope trace for the ring counter. With a multichannel DSO it ought to be possible to work out the source of the problem, by just leaving it running and capturing the eye...
by AVGresponding
Mon Feb 24, 2025 6:14 am
Forum: Test Equipment
Topic: Fluke 8125A
Replies: 48
Views: 16041

Re: Fluke 8125A

In other words, you want me to tear mine back down and figure it out, in order to make a less wordy and more concise analysis. I did point out in the comments for his video that the ladder transistors seem to have been swapped out on his, from ge to si, and I wonder if that is (more) gorilla eviden...
by AVGresponding
Sun Feb 23, 2025 6:22 pm
Forum: Test Equipment
Topic: Fluke 8125A
Replies: 48
Views: 16041

Re: Fluke 8125A