Traco DC converters for filament supplies - UK Vintage Radio Repair and Restoration Discussion Forum

Richardgr · 14th Aug 2022, 1:22 pm

Came across these DC-DC converters as a lot on an auction that would look to be a good source of regulated, filtered 5VDC for DHTs, like 300B. They are rated for 2A out, so should be meaty enough. Could they be suitable?

ten12wi_datasheet.pdf

Ed_Dinning · 14th Aug 2022, 1:44 pm

Worth a try, but be aware a valve takes a very high initial current, which may put the converter into overcurrent mode and it will not then start.
Generally used for aux and isolated rails in various pieces of kit

Ed

duncanlowe · 14th Aug 2022, 1:49 pm

Bear in mind also that they are essentially SMPSUs at 400kHz. Have used various versions of them in a few devices I was employed to assemble. Probably have some of my own somewhere.

14th Aug 2022, 1:22 pm	#1
Richardgr Heptode Join Date: Oct 2019 Location: Täby, Sweden Posts: 708	Traco DC converters for filament supplies Came across these DC-DC converters as a lot on an auction that would look to be a good source of regulated, filtered 5VDC for DHTs, like 300B. They are rated for 2A out, so should be meaty enough. Could they be suitable? ten12wi_datasheet.pdf Attached Thumbnails

14th Aug 2022, 1:44 pm	#2
Ed_Dinning Dekatron Join Date: Jan 2004 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 8,195	Re: Traco DC converters for filament supplies Worth a try, but be aware a valve takes a very high initial current, which may put the converter into overcurrent mode and it will not then start. Generally used for aux and isolated rails in various pieces of kit Ed

14th Aug 2022, 1:49 pm	#3
duncanlowe Nonode Join Date: Jan 2016 Location: Stafford, Staffs. UK. Posts: 2,532	Re: Traco DC converters for filament supplies Bear in mind also that they are essentially SMPSUs at 400kHz. Have used various versions of them in a few devices I was employed to assemble. Probably have some of my own somewhere.