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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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11th Jul 2021, 4:09 pm | #21 |
Pentode
Join Date: Oct 2006
Location: Brackley Northamptonshire, UK.
Posts: 240
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Re: APT Electronic industries LTD Model 503 500V regulated power supply
This 1953 advertisement may be of interest.
I'm not sure where I got it from but it gives details of the range, apart from mine of course! Later adverts may have included mine. One thing I was surprised at, since looking at the posted circuit, was the use of tiny Hivac XFW40 wire ended battery valves V6 and V11. Not the sort of thing you normally expect in something like this brute. Denis
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11th Jul 2021, 4:32 pm | #22 | |
Dekatron
Join Date: Sep 2007
Location: Oxfordshire, UK.
Posts: 4,311
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Re: APT Electronic industries LTD Model 503 500V regulated power supply
Quote:
I don't think there's a history of people coming to known harm over the years that these things were in quite widespread use. And selenium isn't hugely toxic. It's a required trace element for good health, after all, and we consume it in our diet. It's just overdosing that can be the problem. Cheers, GJ
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