Search found 5511 matches

by jack
Thu Feb 29, 2024 9:41 pm
Forum: Assorted Stuff
Topic: The Quackery Thread
Replies: 360
Views: 197812

Re: The Quackery Thread

Could be right, too. I do like a nice bit of physics. However, when I visited a lab in a desert (low humidity, doncher know), we were instructed to wear cotton only because of the static problems. This was fine for me because as commented by a friend, "Sartorial and elegance are just words to ...
by jack
Wed Feb 28, 2024 11:08 am
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 10209

Re: Audiojumble 03/03/24

I looked up ECLL800. Looks like a nightmare waiting to happen. With shared cathodes, unbalanced anode currents are a given. And that phase splitter looks proper dodgy. I didn't see any audio measurements in the Practical Wireless article. If anyone can resolve that, it's you! Accept the challenge! ...
by jack
Wed Feb 28, 2024 5:30 am
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 10209

Re: Audiojumble 03/03/24

What an interesting valve. A one socket push pull output stage. I've got 10 of those, NIB. They were for a project that, like many others, I've not yet found the time for. At one time I had a thing for "spud" amps, so these made sense. E = 6.3V, C = Triode, LL = 2 x Output Pentodes, 8 = B...
by jack
Tue Feb 27, 2024 6:43 pm
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 10209

Re: Audiojumble 03/03/24

12,000! Blimus! If you have any 6SJ7 (octal small-signal pentode), I would like a couple. I have about 1,500 valves, so I consider myself well-stocked. Do you need anything? Pentode stock: ECLL800 EL84 6BQ5 / EL84 C3g C3m 4P1L GU-50 / LS-50 GU-81M 7591S 12GN7A/12HG7 JAN-6AG5 RS1003 / SRS551 Sub min...
by jack
Tue Feb 27, 2024 11:56 am
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 10209

Re: Audiojumble 03/03/24

Often, stuff that glows. All depends, really. I am on the lookout for an aluminium fan (the kind valve Tek oscilloscopes had) to put inside my temperature cabinet. Moving magnet cartridges without styli for measuring in my ongoing cartridge investigation. Enamelled copper wire. But probably not cap...
by jack
Mon Feb 26, 2024 12:38 pm
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 10209

Re: Audiojumble 03/03/24

Morgan Jones wrote: Mon Feb 26, 2024 11:28 am So, what are you taking? Anything I might be interested in?
All depends what you're interested in ! 8)

Loads of nice BHC & RIFA caps...

Lots of stuff for building things
by jack
Wed Feb 21, 2024 11:18 pm
Forum: Assorted Stuff
Topic: General health matters.
Replies: 794
Views: 213687

Re: General health matters.

Got to be said.

Sh .. sh... Shockingly Shoddy...!
by jack
Fri Feb 16, 2024 6:07 pm
Forum: News
Topic: Alexei Navalny RIP
Replies: 1
Views: 1158

Alexei Navalny RIP

Not unexpected, but still grim.

https://www.bbc.co.uk/news/live/world-68316979
by jack
Mon Feb 12, 2024 9:16 am
Forum: Assorted Stuff
Topic: Interesting (non musical) YouTube videos.
Replies: 416
Views: 171614

Re: Interesting (non musical) YouTube videos.

Mike H wrote: Thu Feb 08, 2024 6:09 pm Wow. Remember making a Airfix kit of one of them.
Here's another one of Hanno from Sharjah... Note the HUGE landing gear to cater for horrid airstrips...

FB_IMG_1707037037690a.jpg
FB_IMG_1707037037690a.jpg (155.72 KiB) Viewed 1741 times
by jack
Wed Feb 07, 2024 7:44 pm
Forum: Assorted Stuff
Topic: Interesting (non musical) YouTube videos.
Replies: 416
Views: 171614

Re: Interesting (non musical) YouTube videos.

Fascinating stuff. Croydon really caught it during WWII on two counts - firstly, the airport and secondly because German bombers that were being intercepted by fighters, when damaged, often just dropped their bombs short of their target (typically docklands) and ran for home. Croydon thus caught a h...
by jack
Mon Feb 05, 2024 8:21 pm
Forum: Assorted Stuff
Topic: The Quackery Thread
Replies: 360
Views: 197812

Re: The Quackery Thread

Mike H wrote: Sun Feb 04, 2024 9:34 pm Sounds like them. Some had like a lightning bolt symbol printed on, I remember. :D
Allegedly, they were supposed to stop folk getting car sick...
by jack
Sun Feb 04, 2024 10:52 am
Forum: Assorted Stuff
Topic: The Quackery Thread
Replies: 360
Views: 197812

Re: The Quackery Thread

andrew Ivimey wrote: Sun Feb 04, 2024 10:11 am Yeah but does it have a 100k earth resistor!!!?
Well, it's 10 times better than most earth straps which are 1 megohm, so it must be good!
by jack
Sun Feb 04, 2024 9:38 am
Forum: Jokes
Topic: A little light humour
Replies: 2717
Views: 1239090

Re: A little light humour

155467-main-qimg-ecccb867476de60fb2a2c7940e90ebe9.jpg
155467-main-qimg-ecccb867476de60fb2a2c7940e90ebe9.jpg (40.31 KiB) Viewed 7747 times
by jack
Sun Feb 04, 2024 3:58 am
Forum: Assorted Stuff
Topic: The Quackery Thread
Replies: 360
Views: 197812

Re: The Quackery Thread

See they do earthing shoes as well. Wonder how much better they are than these https://www.safetecdirect.co.uk/products/fc03/portwest-fc03-compositelite-esd-anti-static-perforated-safety-clog-sb-ae?sku=fc03bk/6&gad_source=1&gclid=Cj0KCQiA5fetBhC9ARIsAP1UMgFkbbFmfdF8s-cusqsPlbcqOL7qDGJtfFLvN...