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ooooohhhh! neat [message #31740 is a reply to message #31737]

Tue, 31 January 2006 17:13

PakProtector
Messages: 935
Registered: May 2009

Illuminati (2nd Degree)

Hey-Hey!!!,
That is about as simple as it is reasonable to do. Single filament TX is easy enough, and I have heard a few amps fairly quiet with that arrangement. The Miller neutralizing caps are quite optional, with no grid choke to contribute additional capacitive loading, the 10k output Z of the pentode stage should drive it well.

With a 12.6-0-12.6 and two diodes full wave and 25V capacitors a small negative supply for the cathode CCS is very easy. Radio Shack has a 450 mA TX for ~$7 and the 25v caps are quite inexpensive. 470R, 1/2 Watt resistors and make a CDC Pi filter.

It's easy to add the small caps later. Get it together, and listen...:) I will soon be unwinding a Peerless S-230-Q to clone for this project. The small 6k6 a-a output is probably the best budget Iron for such a project.
cheers,
Douglas

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[Message index]

		Bias supply By: PakProtector on Sat, 21 January 2006 06:30
		the Schematic By: PakProtector on Tue, 24 January 2006 09:55
		Re: the Schematic By: Damir on Tue, 24 January 2006 15:21
		Re: the Schematic By: 2wo on Tue, 24 January 2006 16:36
		Re: the Schematic By: PakProtector on Tue, 24 January 2006 17:03
		Re: Bias supply By: Manualblock on Wed, 25 January 2006 10:01
		Re: Bias supply By: Damir on Wed, 25 January 2006 13:49
		Re: Bias supply By: Manualblock on Wed, 25 January 2006 16:11
		Re: Bias supply By: Damir on Wed, 25 January 2006 23:28
		Re: Bias supply By: Manualblock on Thu, 26 January 2006 07:59
		Re: Bias supply By: Damir on Thu, 26 January 2006 11:17
		Re: Bias supply By: Manualblock on Thu, 26 January 2006 12:40
		Re: Bias supply By: Damir on Thu, 26 January 2006 13:04
		Re: Bias supply By: Manualblock on Thu, 26 January 2006 15:03
		Should you consider Anything involving high voltages novice work? By: Old Brown Eyes on Thu, 26 January 2006 13:14
		Re: Should you consider Anything involving high voltages novice work? By: Manualblock on Thu, 26 January 2006 15:02
		Latest Seth schematic By: Old Brown Eyes on Fri, 27 January 2006 05:55
		Re: Latest Seth schematic By: PakProtector on Fri, 27 January 2006 09:19
		Re: Latest Seth schematic By: Manualblock on Fri, 27 January 2006 09:22
		yes it does... By: PakProtector on Fri, 27 January 2006 13:30
		Re: yes it does... By: Jeff Lessard on Tue, 31 January 2006 12:53
		Re: yes it does... By: PakProtector on Tue, 31 January 2006 16:47
		Re: Should you consider Anything involving high voltages novice work? By: PakProtector on Thu, 26 January 2006 18:08
		patience... By: PakProtector on Thu, 26 January 2006 18:18
		Re: patience... By: Manualblock on Thu, 26 January 2006 20:56
		Galahad Amp By: Wayne Parham on Fri, 27 January 2006 09:11
		Re: Galahad Amp By: Manualblock on Fri, 27 January 2006 09:22
		Re: Galahad Amp By: PakProtector on Fri, 27 January 2006 09:27
		Re: Galahad Amp By: Wayne Parham on Fri, 27 January 2006 10:37
		Re: Bias supply By: 2wo on Sun, 29 January 2006 18:22
		ooooohhhh! neat By: PakProtector on Tue, 31 January 2006 17:13
		simple circuits By: PakProtector on Wed, 01 February 2006 17:42
		MOSFET D-S voltage By: PakProtector on Wed, 25 January 2006 14:42

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