Cathode Ray Tubes...

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Cathode Ray Tubes...

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Hairyloon

Joined: 20 Nov 2008
Posts: 15425
Location: Today I are mostly being in Yorkshire.

Posted: Thu Mar 31, 16 12:14 pm Post subject: Cathode Ray Tubes...
Has anybody found anything helpful to do with old televisions, other than the obvious. Generally it seems that you cannot give them away... If they are for the bin, then there is copper in the mechanism which can be salvaged, but aside from that, I am a bit stumped...

dpack

Joined: 02 Jul 2005
Posts: 46249
Location: yes

Posted: Thu Mar 31, 16 1:17 pm Post subject:

beware the large capacitors bite BE VERY AWARE

the coils can be re jigged using rf production and rf detection circuits (plenty of components on the boards) to make not very efficient metal detectors.

the boards have useful components for a variety of circuits

the ht power supply has uses but is quite dangeroos .

the tube is only of use as a tube afaik and has a variety of nasty things inside it if you can think of a use for the electron guns

the box can make a reasonable insect cage if you gauze the front and block the bigger holes

if you decide on a "dramatic" end the bits are quite hard to sweep up from a car park

just dont ask why i know that

onemanband

Joined: 26 Dec 2010
Posts: 1473
Location: NCA90

Posted: Thu Mar 31, 16 4:24 pm Post subject: Re: Cathode Ray Tubes...

Hairyloon wrote:

............
Generally it seems that you cannot give them away...
...

Disposing of them legally via my business, one TV would cost me FROM �25+vat.

I believe you've posed this question a couple of times before .....I'd get rid of them now, for free, whilst you can, at your local tidy tip.

Hairyloon

Joined: 20 Nov 2008
Posts: 15425
Location: Today I are mostly being in Yorkshire.

Posted: Thu Mar 31, 16 7:15 pm Post subject: Re: Cathode Ray Tubes...

onemanband wrote:

Hairyloon wrote:

............
Generally it seems that you cannot give them away...
...

Disposing of them legally via my business, one TV would cost me FROM �25+vat...

That's outrageous. What's in them to make them cost so much?

dpack

Joined: 02 Jul 2005
Posts: 46249
Location: yes

Posted: Thu Mar 31, 16 7:18 pm Post subject:
a variety of toxic stuff mixed in with non recoverable stuff at a guess.

onemanband

Joined: 26 Dec 2010
Posts: 1473
Location: NCA90

Posted: Thu Mar 31, 16 10:32 pm Post subject:
It's the WEEE regulations They contain lead, mercury, cadmium. AFAIK they are manually recycled - I guess that's where the cost is. That and the paperwork.

Hairyloon

Joined: 20 Nov 2008
Posts: 15425
Location: Today I are mostly being in Yorkshire.

Posted: Thu Mar 31, 16 10:48 pm Post subject:

onemanband wrote:

It's the WEEE regulations

I'd guessed it might be.

Quote:

They contain lead, mercury, cadmium.

Yes, but none of it is floating around loose, or hiding somewhere that it can leap out and bite you.

Quote:

AFAIK they are manually recycled - I guess that's where the cost is.
That and the paperwork.

There is no excuse for that much paperwork, and I cannot see that there is that much work in disassembling a TV... maybe that's a job for one of the ones here: time how long it takes.

Mistress Rose

Joined: 21 Jul 2011
Posts: 16006

Posted: Fri Apr 01, 16 6:31 am Post subject:

If you just take the thing apart and don't recover any of it, it will be fairly quick to dispose of but will have to be disposed of as toxic waste. Don't forget even the solder will release lead, and there is a fair bit of solder in it. There are some components that might be worth recovering, and it is possible to recover the copper, and possibly some other metals, but not for free. The overall cost of recovery must be worthwhile though or it wouldn't be done.

gregotyn

Joined: 24 Jun 2010
Posts: 2201
Location: Llanfyllin area

Posted: Fri Apr 01, 16 2:35 pm Post subject:

As a by the way I have kept copper wire for years stripping the outside off and rolling the wire up, and putting the rubber/plastic into the dustbin and now into the recycling bin. I have a lot of wire, thinking it would pay for a trip to Australia! Well it would have done 30 years ago, but not now. Every time I scrapped a kettle or whatever off came the flex and the same with old electric motors, my main stripping time now being when I am in bed! I didn't realise the dangers associated with microwaves, but luckily never had one till I knew about their hazards and so only take the leads. I am sure the quantity of copper I have will make the scrap men 'look up'. It all stems from having nothing but a loving mother and home-father died young, so I did all I could for her, and became a hoarder and collector-gannet I think they call it-with a view to helping as an 8yo. I used to get the manure the delivery horses left in piles in the road for 3d or1.25p in today's money
I also collect wood mainly from pallets and have a large amount in various forms and sizes, covering about 30ft by 40ft. stacked up. I add to it and take from it as needed,selling it where I can, in whatever form I can and make various things. All stems from the time when I had nothing but enthusiasm.

Hairyloon

Joined: 20 Nov 2008
Posts: 15425
Location: Today I are mostly being in Yorkshire.

Posted: Fri Apr 01, 16 9:10 pm Post subject:

gregotyn wrote:

I didn't realise the dangers associated with microwaves, but luckily never had one till I knew about their hazards and so only take the leads...

Aside from the capacitors, and the obvious risk if you were to power up the magnetron outside of the box, what risks are those?

gregotyn

Joined: 24 Jun 2010
Posts: 2201
Location: Llanfyllin area

Posted: Sat Apr 02, 16 8:56 am Post subject:
You will understand why I stop at leads when I ask "What is a magnetron-sounds like alien spacemen to me. I assume a capacitor holds things. Electricity is something with a switch at one end and something I need at the other end, but I don't know how it works and don't really want to. I can rewire my house-I did that a few years ago but that is logic and it worked!

Hairyloon

Joined: 20 Nov 2008
Posts: 15425
Location: Today I are mostly being in Yorkshire.

Posted: Mon Apr 04, 16 3:41 pm Post subject:

gregotyn wrote:

You will understand why I stop at leads when I ask "What is a magnetron-sounds like alien spacemen to me. I assume a capacitor holds things.

Yes, a capacitor holds charge. They have some big ones inside some things that easily hold enough to kill you and they can hold them for quite a long time.
The magnetron is the thing that fires the microwaves... or at least, that is what I call it: it might properly be called something completely different.

gregotyn

Joined: 24 Jun 2010
Posts: 2201
Location: Llanfyllin area

Posted: Tue Apr 05, 16 12:53 pm Post subject:
I will stick to leads! thanks.

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