Search found 166 matches

by Robert
Fri Nov 29, 2024 12:16 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

New arrival, the - hp - 8640B! It's been on the wish list basically since I was bit with the TEA bug. And now I own one. A colleague, who already owns one, tipped me off on one that was offered at a low -- for Sweden -- starting price of about 150USD. And it was very local, and pickup only, the lat...
by Robert
Sun Nov 24, 2024 6:34 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

Frequency is between 1 and 2.5kHz. Loaded with 50pF 2500V +- 200V (presume this is with an electrostatic meter or similar) output should drop to 1900V +- 400V when loaded with 50pF and 25 megohm. input is nominally 6.75V maximum but has a variable supply to control gain.

Robert G8RPI
by Robert
Sun Nov 24, 2024 8:11 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

No, the Tek PSU has a North American plug (NEMA 5-15P). Technically this makes it illegal to use in the UK.
by Robert
Sat Nov 23, 2024 7:46 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

According to the TekWiki, it's a power supply for a type 131 model 4 current probe amplifier, 230V variant. Part number 015-028. Also trying to identify this little bastard: Has what looks like a NSN but probably isn't, 6130-99-117-8700 f84f6be4-1f7b-4117-a1fc-6ba87fba5635.jpg That is a high voltag...
by Robert
Sat Nov 09, 2024 7:45 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

I visited the big surplus store in Albuquerque NM yesterday It's "Surplus City". Part old style industrial / military surplus part modern foreign made new stuff. Lots of boat anchor TE in a big warehouse including several 6' high 19" racks full of varible power supplies. HP, LAmbda et...
by Robert
Sun Nov 03, 2024 7:58 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

I mentioned Johns Radio a few days ago. Purely by coincidence I was looking at an archive disk today and came across the catalog for the "closing down" sale in 2002. John was not happy with the result and claimed that the buyers had conspired to keep prices low. No such thing happened. The...
by Robert
Thu Oct 24, 2024 9:01 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

I've seen this failure mode before. I was working with high current pulse operation of LEDs and seeing how far we could push them. This was on the day job nearly 20 years go. If you ran them too hard the light output whent down along with the forward voltage. If you backed the current off the bright...
by Robert
Wed Oct 23, 2024 8:39 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

My recntly aquired Wavetek Model 52 not ony had dual display it has two fully isolated input modules and each of those can measure voltage and curreet and thus calculate power at the same time. All for £35. My Keithley 199 is probably favorite though. No dual display but compact with 51/2 big clear ...
by Robert
Mon Sep 30, 2024 7:02 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

On National Hamfest. The "fleamarket" pitches outside were £30 for one table. You are nhave ot allowed a gazebo or awning and if you have an assistant they have to pay another £7. The R&S Polyscope is an early network analyser. It was a single box, large display, two port solution when...
by Robert
Sun Sep 29, 2024 6:25 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

You were too late, we got all the good bits :P The guy with the clean TE neatly laid out with no price tags was who I bought the R&S DMM off. I'm a bit disapponted that he didn't tell me it as faulty. If I'd paid his original aking price I'd be seriously miffed. The 3586B is basically a very hig...
by Robert
Sun Sep 29, 2024 5:21 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

Well I was wrong. The little 1A bridge rectifier that supplies the +5, +15 and -15 regulators was OK. With the capacitors replaced still no measurements. The +15 and -15 Volt outputs were OK but no 5V. That comes from a LM309K (TO3) regulator. Whipped that out and it read totally open circuit on dio...
by Robert
Sun Sep 29, 2024 1:45 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

So I had a lok inside the R&S UDS 5 DMM. It is full of Roederstein EK electrolytics. These have a dark brown thermoset plastic case rather than the usual aluminium can. Sevveral of them are obviously faulty. Tiny cracks and dried out electrolyte residue. And there are no supply voltages on the a...
by Robert
Sat Sep 28, 2024 11:27 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

Edited to clarify no ceefive :)
https://www.chemring.com/what-we-do/cou ... e-disposal has a link to the Shrike datasheet (I got a Mk5).
by Robert
Sat Sep 28, 2024 10:15 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

Nation aHamfest Visit Report. I went on Friday. No one wanted the instrument mobile :-( Rally was busy but not crowded. I was one of the first in other than traders. The outdoor fleamarket opens 30 minutes before the hall. Table are expensive £30 so not too much junk. First thing I picked up isn't T...
by Robert
Wed Sep 25, 2024 5:51 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

Anyone on here going to National Hamfest on Friday and interested in a HP 1183A Instrument Mobile? Designed for the 54600 series of 'scopes MSOs etc will also taka other instruments. ANY offer considered. Scope not included (I do have a nice 54645D MSO but it would be extra). Agilent-1183A.jpg coeme...
by Robert
Wed Sep 25, 2024 5:00 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

The Hameg 'scopes were a mid-range 'scope in the UK. Certainly a step above the "Scopex" designs that were sold under many names. Similar to the lower end Telequipment of same vintage but below Phillips, Tektronix and HP. Gould did a similar colour / style range but they were plauged by fa...
by Robert
Sun Sep 22, 2024 7:37 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

Went into my storage unit yesterday to get a couple mercury displacment contactors for a mate. Found a couple of HP41C calculators too. Must have a look at them. I really need to clear some of that storage out. Anyone want a fuel quantity test set (electromechanical capacitance bridge and subsitutio...
by Robert
Thu Sep 05, 2024 5:57 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

That's only 10 miles from where I was for work last month. I had spare time but also Covid 19 so wasn't visiting anywhere. Maybe next time...
by Robert
Wed May 29, 2024 6:52 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

My last performance car was an estate (wagon). Had 275 HP, 296ft-lb, <6s 0-60, 155 MPH (limited) from a 2.67l (163 in3) V6. And that was a late 90's design. Terribly complex though. Twin turbo, 30 valves, 4 camshafts VVT, etc. (The extra 10 HP over spec was from a Miltec mild exhaust). Audi S4 Avant...
by Robert
Sun May 12, 2024 9:47 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

The EU seems to allow the "Knight Rider" indicators (turn signals) which don't meet the requirements (all indicators must come on simultaneously) in the UK at least. This is particuarly true when the "moving light is splt across the rear quarter and rear hatch / boot. Apart from that ...
by Robert
Mon May 06, 2024 7:37 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

The EV I jump started was fine and had enough range in the traction battery to get home. It just needed the 12V battery charged so it would turn on. No idea why it discharged with power in the traction battery. On people falling asleep with dry cleaning its more likely to be "trike" Trichl...
by Robert
Sun May 05, 2024 4:47 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

Went to the Thorpe Camp Radio Rally today. Mostly to sell. Not much TE sold and I didn't but any. I did have one first related to an earlier discussion on here: I "jump-started" an EV. Not a Tesla, a Hyundai. Owned by the seller next to me. Somehow over 4-5 hours they discharged the 12V le...
by Robert
Fri May 03, 2024 12:55 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

In the USA you can buy rust stain remover containing HF at the hardware store :shock: Whink Rust Stain remover is 2% HF
Suprisingly I found a UK seller https://www.repairingproducts.co.uk/pro ... over-16oz/
by Robert
Thu May 02, 2024 11:23 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

Hmm have you heard of EPP Regulations? https://www.gov.uk/government/publications/licensing-for-home-users-of-explosives-precursors/licensing-for-home-users-of-poisons-and-explosive-precursors. My radioactive sources are all legal in the UK. Activities vary from less than a microcuries to several cu...
by Robert
Thu May 02, 2024 7:38 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3208
Views: 739655

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

I've not much data, couple of TB. Most of thet is PDF manuals, books and periodicals and seperate from personal stuff. There is a lot of physical TE etc which concerns SWMBO. Two garages, a workshop, attic and 1/2 ISO container storage unit :) The storage uint is all binned up in Really Useful Boxes...