Search found 5483 matches

by jack
Sat Mar 16, 2024 10:06 am
Forum: Jokes
Topic: A little light humour
Replies: 2698
Views: 1134143

Re: A little light humour

One for Max !!

IMG_0035.jpeg
IMG_0035.jpeg (86.34 KiB) Viewed 466 times
by jack
Sun Mar 10, 2024 10:40 am
Forum: Assorted Stuff
Topic: Nothing In Particular
Replies: 16428
Views: 4475341

Re: Nothing In Particular

Just have to post this lovely photo of a Firecrest, the UK's smallest bird at just 5g. The photo is from the Marden Wildlife group - that's the next village to us and where I keep my bees - they do a lot of ringing and recording of migrant birds and have some super photographers... the photo below i...
by jack
Fri Mar 08, 2024 3:58 pm
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 5105

Re: Audiojumble 03/03/24

Maybe it’s the much lower frequency that forces the requirement for an earth path?

My unit runs around 270kHz…
by jack
Fri Mar 08, 2024 7:49 am
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 5105

Re: Audiojumble 03/03/24

Morgan Jones wrote: Thu Mar 07, 2024 10:55 pm I'll measure what it produces first. But it certainly didn't glow a fluorescent tube when held in contact.
My one uses 8xAA, so 12V rather than the 6V of yours... Same available current, twice the voltage, so as you say, presumably pokier.
by jack
Thu Mar 07, 2024 8:48 pm
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 5105

Re: Audiojumble 03/03/24

Arrived. Disappointment. Insufficient poke. Just about managed to produce an orange glow in an 85A1 neon). I am told that: If it's blue, it's air. If it's green, it's barium. If it's pink-purple it's argon. And Jack's large nixie managed a blue glow with his tester, which I assume is pokier. Return...
by jack
Thu Mar 07, 2024 6:12 pm
Forum: Assorted Stuff
Topic: what are you doing ?
Replies: 1303
Views: 404921

Re: what are you doing ?

Damn! Thinking about getting a ZWO Seestar S50… all Max’s fault! Ages since I’ve owned a telescope… decades…

Reviews are insanely good
by jack
Tue Mar 05, 2024 10:27 am
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 5105

Re: Audiojumble 03/03/24

Morgan Jones wrote: Tue Mar 05, 2024 10:21 am Don't you just hate people who hide what they've done?
Probably less than £10 to make including box and all components/pcb, then charge €250 for a new one!

This is probably very similar:

https://www.aliexpress.com/item/1005005975707232.html

It's available on Amazon for about £17
by jack
Tue Mar 05, 2024 10:15 am
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 5105

Re: Audiojumble 03/03/24

As suspected, it's a 50% duty cycle, 1 second on, one second off RF pulse at 270kHz. Likely a couple of KV, but can't measure that at the moment - I'll have to get my trusty 40,000V probe out...! I can't get the board out easily as they've deliberately sealed it into the box and potted some of the c...
by jack
Tue Mar 05, 2024 9:17 am
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 5105

Re: Audiojumble 03/03/24

Photograph would be nice. Measurement would be really nice, but if (as I suspect) it produces high voltage, but AC, it would be difficult to measure. Inside it, I would expect a ferrite transformer, with or without voltage multiplier (which should be easy to spot). Waving a scope probe a foot away ...
by jack
Mon Mar 04, 2024 2:25 pm
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 5105

Re: Audiojumble 03/03/24

Nice to see you there. It seems the Voltarc company went bust some time ago, and I couldn't find your natty little tester anywhere. And idea of what it produces on its aerial? AC, DC? Voltage? It wouldn't be difficult to knock up something. They are around but are now called "Masonlite ELT – E...
by jack
Sun Mar 03, 2024 7:36 pm
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 5105

Re: Audiojumble 03/03/24

A pretty good day. Three AT types (MJ, DtB & Thomas) rocked up and SWMBO and I managed to sell a fair bit of ephemera.
by jack
Sat Mar 02, 2024 5:34 pm
Forum: Assorted Stuff
Topic: The Quackery Thread
Replies: 360
Views: 188894

Re: The Quackery Thread

10% off on a Tuesday for OAPs. They never ask my age - why not? ...or as a replacement for HRT therapy - moderate those hot flushes... Back in the day when I was working in the City of London, in the Summer, the data centre staff used to charge a quid for 5 minutes in front of the chillers - they'd...
by jack
Sat Mar 02, 2024 4:13 pm
Forum: Assorted Stuff
Topic: Audiojumble 03/03/24
Replies: 36
Views: 5105

Re: Audiojumble 03/03/24

Take to Audiojumble or restore? ESL 63s

These were Sir Clive Sinclair's (allegedly). His cat has savaged the "gloves", he smoked like a chimney and stood coffee cups on them.

Sell or keep?

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PXL_20240302_161023323_copy_1008x756.jpg (106.46 KiB) Viewed 789 times
by jack
Sat Mar 02, 2024 1:13 pm
Forum: Your Fave Artists
Topic: What Are You Listening To Right This Minute?
Replies: 6147
Views: 1851933

Re: What Are You Listening To Right This Minute?

Dave the bass wrote: Sat Mar 02, 2024 10:43 am
andrew Ivimey wrote: Wed Feb 28, 2024 9:10 pm There's nothing Spanish about 'this video is unavailable ' - or is it my phone? !
I dunno MrI, it seems work ok on my phone, laptop and tablet.

Maybe it's a Bedford thang?!
If he's still in north Africa, it might be local mores...
by jack
Fri Mar 01, 2024 6:49 pm
Forum: Assorted Stuff
Topic: what are you doing ?
Replies: 1303
Views: 404921

Re: what are you doing ?

Super stuff. Really lovely