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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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9th Mar 2023, 10:52 pm | #41 |
Dekatron
Join Date: Feb 2007
Location: Lynton, N. Devon, UK.
Posts: 7,088
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Re: Component recycling mystery.
I think with more surface-mounted components, recycling at component level will become less and less. It just isn't practicable to remove a load of 0603 and 0402 resistors and capacitors, test them, and reuse them. The whole board will be shredded, metals will be recovered, and the rest scrapped.
Separating the metals - tin (solder), copper (board tracking), aluminium (lead wires in semiconductors), molybdenum (power devices), silver (solder), tantalum (capacitors), palladium (surface-mount terminations) is an industry in itself!, |
9th Mar 2023, 11:02 pm | #42 |
Octode
Join Date: Jul 2009
Location: Cheshire, UK.
Posts: 1,740
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Re: Component recycling mystery.
Here is the thread I read on the eevblog forum recently;
https://www.eevblog.com/forum/manufa...er-components/ There is "retronix" in Scotland mentioned in reply #12. https://retronix.com/component-reclaim/ Seems to be aimed at recovering the high value parts though. David |
10th Mar 2023, 9:38 am | #43 |
Dekatron
Join Date: Feb 2005
Location: West Cumbria (CA13), UK
Posts: 6,130
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Re: Component recycling mystery.
Personally, I prefer brown/blue-sleeved-with-brown to differentiate between direct and switched live.
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Mending is better than Ending (cf Brave New World by Aldous Huxley) |
10th Mar 2023, 9:49 am | #44 |
Moderator
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,879
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Re: Component recycling mystery.
Please stay on topic
There has been a few posts about house wiring. Please read this post: https://www.vintage-radio.net/forum/...d.php?t=198565 Cheers Mike T
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Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk |
10th Mar 2023, 11:04 am | #45 |
Dekatron
Join Date: Feb 2005
Location: West Cumbria (CA13), UK
Posts: 6,130
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Re: Component recycling mystery.
Apologies. Consider my wrist slapped!
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Mending is better than Ending (cf Brave New World by Aldous Huxley) |
10th Mar 2023, 11:24 am | #46 |
Octode
Join Date: Aug 2008
Location: Rayleigh near Southend-On-Sea, Essex, UK.
Posts: 1,883
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Re: Component recycling mystery.
Hello,
Regards using NOS or salvaged parts... recently, I’ve successfully made five guitar amplifiers using a combination of new, NOS and salvaged parts. I’m careful with the NOS and salvaged parts I use and thoroughly check them. As regards NOS resistors I use carbon film parts by Welwyn, Phier and Iskra. The Erie ‘100’ high stabs test OK. Obviously, the electrolytic capacitors are new, but I’ve used ‘salvaged’ Mullard C296 and Silver Mica capacitors after they have been thoroughly checked for leakage and capacitance at the rated voltage. The pots and sockets and the B9A valve bases are new. As regards SM assemblies - and as already stated - the ‘mass’ re-use of SM parts is more or less impossible, so it’s case of salvaging the materials. However, saying that, I do have box of ‘scrap’ SM PCB’s where I carefully remove SM resistors and capacitors, being careful not to damage the terminations on the package, if I don’t have the correct value in the component draws, when I quickly need an SM part for an SM based project/unit I’m working on. Terry |
10th Mar 2023, 11:54 am | #47 |
Hexode
Join Date: Dec 2018
Location: Lugo, Spain
Posts: 483
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Re: Component recycling mystery.
I can see everyone has different views and thats fine.#
So i,m here at the bench building an RF sampler for use with my old Gould freebe scope that i was given years ago and wiring up the ground wiring to the BNC sockets with freebe copper wire i got when the crew came around the power poles changing the twin solid core for new wire. Both could have easily been dumped but i salvaged them, and talking of salvage stuff several years ago 72 cans of lager fell out of a skip at the back of a supermarket where the local town buzzards also pick off i think the other fella got about a 100 cans, I really enjoyed those 72 cans of free lager !!! |
11th Mar 2023, 11:35 am | #48 |
Pentode
Join Date: Sep 2011
Location: Coventry, West Midlands, UK.
Posts: 210
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Re: Component recycling mystery.
I got a used CD mechanism for my 33 year old car from a Chinese company, Opuradio, I've wondered how they got hold of it.
Last edited by G6fylneil; 11th Mar 2023 at 11:43 am. |
12th Mar 2023, 5:14 pm | #49 | |
Octode
Join Date: Nov 2013
Location: Penrith, Cumbria, UK
Posts: 1,993
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Re: Component recycling mystery.
Quote:
It would make a very usable wire antenna for HF, I know the advice is to use hard drawn copper that doesn't stretch etc etc but practically and in my LIMITED experience such wire is perfectly usable for DIY antennas. In fact amongst a lot of highly experienced amateurs in my locality they'd rather use this kind of wire than the oft recommended "Flexweave" stuff. After seeing how easily flexweave corrodes even under its transparent insulation I kinda see their point. And another good use would be for burying radials, just seal the cut ends with a suitable substance like liquid tape etcetc. The bare copper earth wire I have found useful for stuff like Buss bars when pulled straight, and the insulated wires I often use for HT wiring due to the way it can be bent into neat runs and holds its shape. I'm not building stuff to sell to non technical users (not to sell at all) so I'm happy that my builds are safe. Twisted tightly together T&E insulated wire makes good heater wire for current hungry Valves like KT88, EL34 etc etc. Stays in shape and looks so much neater than stranded wire. Andy 2E0AND |
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