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Re: Input stage [message #30825 is a reply to message #30822]

Fri, 04 March 2005 13:41

PakProtector
Messages: 935
Registered: May 2009

Illuminati (2nd Degree)

Hey-Hey!!!,
Yes I have. Built with 6AK5, 6AU6, 12BY7, 12GN7, 6AH6, 8136. Missed a few, but the slightly more complex looking cascode works better. Tread Ec2 like the pentode's g2, and you're off.

the g2 being in parallel with the plate does funny thigs( I think ) to the constant current out of the cathode circuit. The cascode is a series afair, and the pentode is a parallel. You still need a good g2 supply...
regards,
Douglas

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[Message index]

		More amp design considerations By: PakProtector on Thu, 03 March 2005 15:11
		1619 Data By: PakProtector on Thu, 03 March 2005 15:14
		Re: 1619 Data By: Manualblock on Thu, 03 March 2005 15:53
		Oil By: PakProtector on Thu, 03 March 2005 16:19
		Re: Oil By: Manualblock on Thu, 03 March 2005 17:35
		Re: More amp design considerations By: cheetah on Thu, 03 March 2005 16:26
		5687's... By: PakProtector on Thu, 03 March 2005 17:10
		Input stage By: cheetah on Fri, 04 March 2005 13:33
		Re: Input stage By: PakProtector on Fri, 04 March 2005 13:41
		Re: Input stage By: cheetah on Fri, 04 March 2005 13:46
		Re: Input stage By: PakProtector on Fri, 04 March 2005 19:19
		Re: More amp design considerations By: Wayne Parham on Thu, 03 March 2005 21:55
		mmmmmm.... By: PakProtector on Fri, 04 March 2005 05:30
		Re: mmmmmm.... By: Manualblock on Fri, 04 March 2005 05:48
		Re: mmmmmm.... By: PakProtector on Fri, 04 March 2005 05:57
		Re: mmmmmm.... By: Manualblock on Fri, 04 March 2005 06:43

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