In Reply to: ECC99 Pin 9 confusion posted by banpuku on February 14, 2017 at 09:38:00:
Connect one wire from your 6.3V source to pin 9. If you use the tube normally, pins 4 and 5 are tired together, and connected to the other wire from the 6.3V source. If you plan only to use either the left or right half of the tube, it's possible to apply 6.3V between pin 9 and pin 4 or 5, depending which half you intend to use. The unused half heater pin would be left floating.
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Follow Ups
- RE: ECC99 Pin 9 confusion - maxhifi 09:43:35 02/14/17 (2)
- RE: ECC99 Pin 9 confusion - banpuku 13:21:43 02/14/17 (1)
- RE: ECC99 Pin 9 confusion - Michael Samra 10:38:49 02/15/17 (0)