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Old 8th Apr 2021, 9:18 pm   #8
PJL
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Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 4,962
Default Re: Mullard 3-3 voltages query

Long connections to the output transformer could easily be the problem. I presume you mean a 560 ohm cathode resistor? what value are you using now as 50V on the EL84 cathode equates to 90mA and will burn out the EL84...
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