Reply to: I don't believe it...

[Churchill]

A mate of mine still works for a semiconductor company based in Chadderton near Oldham. Mainly amplifier chips for LNBs etc.

(An ex-Ferranti site...)

[BrowneIssue]

On the early valve colour TV's, the EHT (25KV) stack was sheilded with a metal case and stories were told of the effects it could have on your TV engineer if the set was run with this removed

But not as bad as a modern mobile phone mast, of course.



(The local church had one put up on the top of their tower and in return got the steps and roof fixed. The local MP and local MEP both got involved in the campaign to get it removed. Perhaps their brains were damaged by playing with the back of their telly when young!)

[ctdctd]

"The DY802 is an EHT rectifier and was not listed in the 1960s although one would expect it to be for monochrome Tv service. The other potential use is in instrumentation such as oscilloscopes.

The shield cup below the anode is to provide the maximum protection from x-ray emission."

On the early valve colour TV's, the EHT (25KV) stack was sheilded with a metal case and stories were told of the effects it could have on your TV engineer if the set was run with this removed

[BrowneIssue]

Ah, how about an EHT rectifier - you could get a serious spark (and belt) off these!

DY802

"The DY802 is an EHT rectifier and was not listed in the 1960s although one would expect it to be for monochrome Tv service. The other potential use is in instrumentation such as oscilloscopes.

The shield cup below the anode is to provide the maximum protection from x-ray emission."

[ctdctd]

Ah, how about an EHT rectifier - you could get a serious spark (and belt) off these!

DY802

[ctdctd]

6V6G/GT listed in the 1964 Mullard book as "Obsolete/Types not in common use"...

Then again, it mostly listed radio & tv valves as used in UK designed stuff...

The 6V6 and variants were used in amplifiers - normally in stuff from the USA.
They were used in the PA amps at the Radio and TV shop that I used to work in as the Saturday boy - happy days

I've a box of old TV valves in the garage - must be worth millions by now?

Can't find my Mullard data book - late 70's I think - but I have located "Radio Circuits and Data" by C.A. Quarrington 1st printed June 1948 - my copy is the nearly new reprint of May 1957!

[ctdctd]

Thanks Xogg... I've got a shedful of ttl too...

And I've got a stores full of 74 ttl in work too...

But thanks for the offer.

I've got a couple of 6V6GT's and some PCF80's if they are any help?

[ctdctd]

Hey z! I still have a shed full of ancient 7400s etc if you need any to fix your ZX81.

ZX80 - the new and improved ZX81 had a Ferranti custom ULA and didn't use any discrete logic chips

[xoggoth]

Hey z! I still have a shed full of ancient 7400s etc if you need any to fix your ZX81.

[d000hg]

Damn right, British IC's for British electronic equipment.

must work harder on that slogan

"Buy British" / "Avoid Asian"?

[Doggy Styles]

God that takes me back, built my first PC out of 74 series TTL.

Me too. I built my first Fast Fourier Transformer out of the 54 series. With help.

[vetran]

20 years

Not been to Newton Aycliffe then? It closed in 1998.

That was a huge site.

[dinker]

The Brits can still knock out a mean 74LS04.

God that takes me back, built my first PC out of 74 series TTL.

[Doggy Styles]

If it was like the old Rover I wouldn't expect it to fire on more than 4 at a time.

I see what you did there.

[BrilloPad]

I just bought some ICs from RS Components.

And what do you know?


They were made in the UK.

I don't believe it!

All the others were made variously in Malaysia, China, and the Chech Republic.

They have not been made here for 20 years : I hope they still work......