|
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. |
|
Thread Tools |
28th Sep 2020, 11:17 am | #1 |
Heptode
Join Date: Aug 2004
Location: Woodbridge, Suffolk, UK.
Posts: 501
|
What are these?
Just in case they maybe useful, does anyone know what these are?
|
28th Sep 2020, 11:43 am | #2 |
Nonode
Join Date: May 2007
Location: Preston, Lancashire, UK.
Posts: 2,511
|
Re: What are these
Coil formers?
Andy |
28th Sep 2020, 11:51 am | #3 |
Heptode
Join Date: Aug 2004
Location: Woodbridge, Suffolk, UK.
Posts: 501
|
Re: What are these
Posible there are gaps for the windings to go from oe section to another
|
28th Sep 2020, 12:55 pm | #4 |
Dekatron
Join Date: Aug 2007
Location: W.Butterwick, near Doncaster UK.
Posts: 8,932
|
Re: What are these?
Some sort of RF choke??
__________________
G8JET BVWS Archivist and Member V.M.A.R.S |
28th Sep 2020, 1:08 pm | #5 |
Heptode
Join Date: Jan 2008
Location: Sheffield, South Yorkshire, UK.
Posts: 655
|
Re: What are these?
Are the made from aluminium? If so they look like some push on transistor heatsinks I've seen.
__________________
Martin BVWS member GQRP Club |
28th Sep 2020, 1:13 pm | #6 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,869
|
Re: What are these?
Those slots would have been expensive to cut in an aluminium heatsink, and not necessary. Bushes for threads wouldn't have been needed either.
If a hard plastic or bakelite, then I think they're coil formers' Any clues in where they came from? David
__________________
Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
28th Sep 2020, 1:59 pm | #7 |
Heptode
Join Date: Dec 2014
Location: Lincoln, Lincolnshire, UK.
Posts: 583
|
Re: What are these?
To me those slots on the base look like they are for some form of locking mechanism. I am fairly certain I have seen a similar method of locking before but my memory fails me.
|
28th Sep 2020, 2:10 pm | #8 |
Nonode
Join Date: Jun 2007
Location: Coulsdon, London, UK.
Posts: 2,163
|
Re: What are these?
Can you read the text in the recess?
|
28th Sep 2020, 2:33 pm | #9 |
Octode
Join Date: Oct 2007
Location: Exeter, Devon, UK.
Posts: 1,554
|
Re: What are these?
I suggest formers for wirewound resistors. I had a Pye potentiometer unit with a number of similar coils for high stability close tolerance resistors for the decade multipliers. I am assuming the material is ebonite.
A much larger version of the sort of bobbin we see inside an Avo 7 or 8, or the Universal Avominor. wme_bill |
28th Sep 2020, 6:39 pm | #10 |
Dekatron
Join Date: Jun 2009
Location: Staffordshire Moorlands, UK.
Posts: 5,271
|
Re: What are these?
I was going to say a coil former for a spark transformer off a gas appliance but then again they're normally quite cheap plasticky things, this looks rather more robust
__________________
Kevin |
28th Sep 2020, 11:39 pm | #11 |
Banned
Join Date: Jun 2015
Location: Mareeba, North Queensland, Australia
Posts: 2,704
|
Re: What are these?
TO5 sized transistor heatsinks.
Joe |
29th Sep 2020, 7:05 am | #12 |
Dekatron
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,658
|
Re: What are these?
"TO5 sized transistor heatsinks." was going to suggest that too as Martin did but "Those slots would have been expensive to cut in an aluminium heatsink, and not necessary." as David says, same goes for the threaded inserts and look at the size, way too big for TO5.
Also being made out of ali & not a ferrite type material EG a conductor without a insulated covering rules out coil formers surely. Andy.
__________________
Curiosity hasn't killed this cat...so far. |
29th Sep 2020, 7:11 am | #13 |
Hexode
Join Date: Jan 2015
Location: Rustington, West Sussex, UK.
Posts: 382
|
Re: What are these?
Possible that it’s a shaft coupling in a drive system. This acts as a damper for slight miss alignment of the two shafts. Motor to reduction gear box – pump etc.
Bob
__________________
Bob, BVWS member |
29th Sep 2020, 3:44 pm | #14 | |
Nonode
Join Date: Jan 2016
Location: Stafford, Staffs. UK.
Posts: 2,532
|
Re: What are these?
Quote:
|
|
29th Sep 2020, 4:24 pm | #15 |
Heptode
Join Date: Aug 2004
Location: Woodbridge, Suffolk, UK.
Posts: 501
|
Re: What are these?
Thanks, lot's of suggestions. They are plastic. The text reads A.P. 5461 J.D. the chap who they came from worked on medical equipment in a hospital. They are rigid. Plug is for size guide.
|