Thread: B&K 470 Rejuvenator test socket question.
View Single Post
  #3  
Old 03-25-2018, 03:09 PM
jr_tech's Avatar
jr_tech jr_tech is offline
VideoKarma Member
  
Join Date: Sep 2009
Posts: 4,511
IIRC, both the tubes mentioned were designed with low power heaters and the cathode is directly heated... the heater operates at around 0.6 to 0.65 volts... will the 470 even go that low?

jr
Reply With Quote