audio-talk

In the end I dropped HiFiCollective a line and they replaced the resistor no problem.

I soldered it in and connected both channels to one +12V SuperReg earlier. I only had a couple of minutes to test and listen but it sounded promising :-). There was the same 1mV AC (IIRC) at the output of both ...

Boards populated, sans dodgy resistor
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Hmmm, I'm soldering up the latest MC boards in a spare hour and testing the 100R resistors (Rs 8,10,12,14) with my DMM one is different from the others. They're 0.25W Takman metal films, actually 91R as HiFiCollective are out of stock of a number of popular values, and one measures 63R. It has the ...

Welcome Kai. Let's hear about your triodes .

Indeed. I suspect it will be more of a lottery for my parents though...

Thanks chaps. It sounds like they've given the lens a "wipe with a tissue" but I'll dig out some isopropyl alcohol for them.

My mum's cheapo boom box type CD player has started to stutter and stop. Sounds like it's on most/all discs. Someone's recommended she gets a CD lens cleaner disc thingy. I've never tried one - do they work? Any recommendations?

That makes sense, it wasn't horribly bright. It would be nice if they put that in the datasheet.

The second question. I bought one of these for a mains on/off switch. It specifies a 12V supply for the LED but the datasheet isn't very helpful. Testing with a 9V battery (actually, down to just 7V) the LED lights. So I'm not sure of the relevance of 12V, and therefore how I control the brightness ...

I really should get on and get this thing boxed up.

A couple of questions for the panel. The umbilical - presumably I really should use stranded wires? The smallest diameter wires I have are solid core and there isn't space in the screened tube to thread the required number of stranded wires that I ...

Nick wrote: Fri Mar 14, 2025 6:43 pm

I did add gate stoppers

They are not gate stoppers as you may imagine, they are to limit forward current if the gate junction becomes forward biased.

jack wrote: Wed Apr 09, 2025 3:27 pm A lot will depend on how good your GP is and what sort of stress they are under - they're human too ...

simon wrote: Wed Apr 09, 2025 1:38 pmI suspect it points to deeper challenges in the NHS as much as medicine by rote.

The procedure , which I understand is the norm, is to weed out time wasters, idiots and hypochondriacs and refer on the rest to a specialist .

That, sadly, has a certain resonance re. specialists.

At one point, after a period of being poorly for maybe 18 months and not responding to treatment ...

pre65 wrote: Wed Apr 09, 2025 2:08 pm I was thinking of how to reply to the comments about GP's and this above from Simon just about sums up my thoughts.

Sorry to hear that Phil

FWIW, which is pretty much the square root of FA, my experience with my GP over the last 4 years of my health "challenges" has been closer to them reading the Haynes manual than independent thought and research :-(.

One of the issues I got resolution to a year ago I've been discussing with my GP ...