Chokes Designed for Choke Input PSU's

[sorenj07]

Does anyone have any good recommendations? I'm looking to build an amp with approximately 150-170mA draw (four 6V6-types).. I've used Hammonds in all my amps and have found that they tend to make the chassis ring, or buzz loudly, etc etc.

[Geek]

Hi,

If you can find old Stancor's, they're pretty quiet. Old TV's used to have them in the 5H range and about that current, but they're rarer than hen's teeth now.

*kicks himself for the HUNDREDS of chassis junked when a TV tech*

Fleabay?

Cheers!

[mesherm]

http://www.alliedelec.com/Search/Produc ... 005300617F

[sorenj07]

http://www.alliedelec.com/Search/ProductDetail.asp?SKU=967-1006&SEARCH=&MPN=C%2D14X&DESC=C%2D14X&R=967%2D1006&sid=47212E005300617F

Have you tried using this thing in choke-input? I'm having trouble seeing any kind of gap in the core...

[f.leghorn]

Chokes designed for choke input from a rectifier are pretty thin on the ground these days. I don't think the Hammonds are designed that way, probably why they protest under direct load from a rectifier.

I know Sowter makes the right design, but you won't like their prices!! Top quality, but mfd. on a pound sterling cost basis.

I don't know for sure if these are suitable, but One-Electron (John Atwood) makes a 6 lb. choke with two identical windings, the PRC-1, designed as a plate retard choke for SE operation. In parallel, it is 5.5H, 230 mA, only 32 ohms and has to be rated 600VDC or better. $59.95 at Antique Electronics. The PRC-2 wired in parallel will give you 12H, 150mA, 76 ohms. www.one-electron.com. I have used them but not in a choke feed aplication.