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Old 11th Sep 2019, 10:53 am   #132
Guitarist28
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Join Date: Dec 2009
Location: Hockley, Essex, UK.
Posts: 556
Default Re: Shaftesbury 519 amplifier

Ok measured the ECC83 and EL84 using a Uni-T UT61E to ground
ECC83
Pin 1 = 101V DC anode (1)
Pin 3 = 0.9V cathode (1)
Pin 5 = 3.3V AC heater
Pin 6 = 99V DC anode (2)
Pin 7 = 1.28V AC grid (2)
Pin 8 = 0.8V (cathode (2)

EL84
Pin 2 = 260V AC Control grid.
Pin 3 = 285V DC Cathode suppressor grid
Pin 4 = 3.2V AC Heater
Pin 5 = 3.2V AC Heater
Pin 7 = 259V AC Anode

I’m not sure if these are what would be expected?

Best regards

Last edited by Station X; 11th Sep 2019 at 11:35 am. Reason: Electrode designations added.
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