|
|
|
|
|||||||
| Sets and Parts Wanted (private buyers only, no swaps) If you need help obtaining components, sets or equipment, post a message here. Private buyers only - no traders. No swaps. |
 |
|
|
Thread Tools |
31st Jul 2025, 5:47 pm
|
#1 |
|
Pentode
Join Date: Nov 2020
Location: Fenny Compton Warwickshire
Posts: 109
|
2.5H smoothing choke wanted
Does anyone have a 2.5H smoothing choke they would sell. I need one for a valve PSU.
|
|
|
31st Jul 2025, 6:25 pm
|
#2 |
|
Dekatron
Join Date: Sep 2007
Location: Oxfordshire, UK.
Posts: 4,574
|
Re: 2.5H smoothing choke wanted
You might want to specify what DC current the choke needs to be able to handle. The Hammond 159T is available new from here https://www.mouser.co.uk/ProductDetail/Hammond-Manufacturing/159T?qs=MDqvSWII5j9mkYkiMaDjgA%3D%3D (and possibly other suppliers) but its maximum current is 300mA. If you need more than that then you'll need a larger choke which'll likely cost more.
Cheers, GJ
__________________
http://www.ampregen.com |
|
|
|
31st Jul 2025, 9:46 pm
|
#3 |
|
Pentode
Join Date: Nov 2020
Location: Fenny Compton Warwickshire
Posts: 109
|
Re: 2.5H smoothing choke wanted
Its for the HT output powering an R1155 which I am told draws around 50 milliamp
|
|
|
|
1st Aug 2025, 1:20 pm
|
#4 |
|
Administrator
Join Date: Dec 2002
Location: Cardiff
Posts: 9,343
|
Re: 2.5H smoothing choke wanted
Multiple posts deleted that were not offering the item requested.
See https://www.vintage-radio.net/forum/showthread.php?t=206646 |
|
|
|
1st Aug 2025, 1:29 pm
|
#5 |
|
Dekatron
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 8,409
|
Re: 2.5H smoothing choke wanted
This - https://primarywindings.com/product/10-henry-100ma-dc-choke/ though not 2.5H will do the job. A few more henry's will reduce ripple. Check the power supply design to make sure though.
Andy.
__________________
Curiosity hasn't killed this cat...so far. |
|
|
|
1st Aug 2025, 2:44 pm
|
#6 |
|
Dekatron
Join Date: Jun 2010
Location: Spalding, Peterborough, Cambridgeshire, UK.
Posts: 3,715
|
Re: 2.5H smoothing choke wanted
I will have a look as I think I should have a pair of maybe 1940s made but until I dig them out won't know the ratings.
Will let you know in next 24 hours. Rob
__________________
Sorting my very large amount TTL & LINEAR ICs. Message any wants, you might be surprised! |
|
|
|
1st Aug 2025, 3:15 pm
|
#7 |
|
Pentode
Join Date: Nov 2020
Location: Fenny Compton Warwickshire
Posts: 109
|
Re: 2.5H smoothing choke wanted
From the information given in one of the earlier deleted posts, it appears the rating needs to be 100 milliamp
|
|
|
|
1st Aug 2025, 4:16 pm
|
#8 |
|
Dekatron
Join Date: Jun 2010
Location: Spalding, Peterborough, Cambridgeshire, UK.
Posts: 3,715
|
Re: 2.5H smoothing choke wanted
I found them and probably far too high inductance as one measures as 17.5H with 444R, the other 19H with 418R winding resistance.
Pretty heavy as well. Message me if any use, probably far too much inductance for your psu but I hung on to them for maybe vintage triode amp builder people as they look the part from that era. Rob
__________________
Sorting my very large amount TTL & LINEAR ICs. Message any wants, you might be surprised! |
|
|
|
1st Aug 2025, 9:57 pm
|
#9 |
|
Pentode
Join Date: Nov 2020
Location: Fenny Compton Warwickshire
Posts: 109
|
Re: 2.5H smoothing choke wanted
Many thanks to all who replied but I think I am now sorted so thread can be closed
|
|
|
