UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Station X · 28th May 2020, 2:04 pm

Surely the differences between the two sets of rotary switch settings you quote are down to arbitrary numbering as to which of the two triodes within the envelope is designated "1"?

123456789 Pins.
641237410 Settings 1
741236410 Settings 2

Only the anodes pins 1 and 6 have seperate test leads A1 and A2, and presumably they just go to a changeover switch in the valve tester?

Testing using both sets of settings should just result in the dodgy sections swopping designations?

28th May 2020, 2:04 pm	#6
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Valve testers and E88CC / ECC88 valves Surely the differences between the two sets of rotary switch settings you quote are down to arbitrary numbering as to which of the two triodes within the envelope is designated "1"? 123456789 Pins. 641237410 Settings 1 741236410 Settings 2 Only the anodes pins 1 and 6 have seperate test leads A1 and A2, and presumably they just go to a changeover switch in the valve tester? Testing using both sets of settings should just result in the dodgy sections swopping designations? __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.