UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Suspect Mains Transformer in 1930s Radio P.S.U.

ms660 · 20th Apr 2018, 12:25 pm

The UU5 is a different type, more heater current needed (2.3 amps) on account that it's an indirectly heated job, ditto for the VU39 (2.5amps)

1821 is directly heated (1 amp) so far as I know.

Lawrence.

20th Apr 2018, 12:25 pm	#56
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Suspect Mains Transformer in 1930s Radio P.S.U. The UU5 is a different type, more heater current needed (2.3 amps) on account that it's an indirectly heated job, ditto for the VU39 (2.5amps) 1821 is directly heated (1 amp) so far as I know. Lawrence.