Again (sorry) what's the biggest 6V heater double rectifier?

leadbelly · 8th August 2007, 04:31 PM

I know rectifiers get covered a lot, so sorry for for adding noise....

What's the biggest commonly available 6V heater full wave rectifier tube? I don't like the heat given off by dropping a 6.3V winding down to 5V, nor using 2 damper diodes with their big heater draw.

Tom Bavis · 8th August 2007, 06:26 PM

6BY5 - comes in G and GA flavors. 6AX5 might also do if 6X4 or 6X5 isn't enough - kinda like an octal EZ81...

Bandersnatch · 8th August 2007, 08:21 PM

hey-Hey!!!,
The highest current, octal dual diode I've found is the 6AX6. At 2.5A of 6.3, you could light a pair of 6AX4's and save 0.1A. That is IFF you could find a 6AX6. I've been using 83-cent 6DE4's I got from AES when they went on sale a bit ago.
cheers,
Douglas

leadbelly · 8th August 2007, 10:42 PM

Quote:

Originally posted by Tom Bavis
6BY5 - comes in G and GA flavors. 6AX5 might also do if 6X4 or 6X5 isn't enough - kinda like an octal EZ81...

Thanks. Any problems tying the cathodes together?

Tom Bavis · 8th August 2007, 11:16 PM

No problem.

Bandersnatch · 8th August 2007, 11:24 PM

Quote:

Originally posted by Tom Bavis
6AX5 might also do if 6X4 or 6X5 isn't enough - kinda like an octal EZ81...

Hey Tom,
The 6AX5 drops a lot more volts than a 6CA4/EZ81. Heating time is comparable, as is output current. The 6CA4 can take a lot more capacitance in the first filter element than the 6AX5 too IIRC.
cheers,
Douglas

8th August 2007, 04:31 PM	#1
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	Again (sorry) what's the biggest 6V heater double rectifier? I know rectifiers get covered a lot, so sorry for for adding noise.... What's the biggest commonly available 6V heater full wave rectifier tube? I don't like the heat given off by dropping a 6.3V winding down to 5V, nor using 2 damper diodes with their big heater draw. __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

8th August 2007, 08:21 PM	#3
Bandersnatch diyAudio Member Join Date: Jul 2003 Location: Ann Arbor, MI	hey-Hey!!!, The highest current, octal dual diode I've found is the 6AX6. At 2.5A of 6.3, you could light a pair of 6AX4's and save 0.1A. That is IFF you could find a 6AX6. I've been using 83-cent 6DE4's I got from AES when they went on sale a bit ago. cheers, Douglas __________________ the Tnuctipun will return

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8th August 2007, 06:26 PM	#2
Tom Bavis diyAudio Member Join Date: Jun 2002 Location: Macedon NY	6BY5 - comes in G and GA flavors. 6AX5 might also do if 6X4 or 6X5 isn't enough - kinda like an octal EZ81...

8th August 2007, 11:16 PM	#5
Tom Bavis diyAudio Member Join Date: Jun 2002 Location: Macedon NY	No problem.

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