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Old 21st July 2023, 11:07 AM
bob orbell bob orbell is offline
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Join Date: Nov 2009
Location: kettering northants.
Posts: 2,710
Default Re: Help needed the Pre-3 CF CSS Config.

Looking at Grahams problem with the CCS, I am now building one, and I think the problem may have been caused by Graham fitting the wrong valve. With the ECC83 he would have had about 50 volts DC into the ground, this would have found its way to the collector of Q2 / 12 via VR2 / 12 and R7 / 17, it may have damaged Q2 / 12. With the correct ECC88 6922 this would not have happened. May be John C could comment. Bob
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