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Old 28th December 2010, 09:01 PM   #1
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Default Something Like A 6EU7?

I have several low power Tx's (250-0-250, 90mA). I would like to use something like the 6EU7 for the gain stage to keep the load down.

The basic requirements are 6V heater, 1ma to 4ma plate current, twin triode, max plate 100V-300V, economical (maybe Russian). SE 6BQ5 (pentode) output.

Any ideas?
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Old 28th December 2010, 09:39 PM   #2
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The 12AX7 (ECC83) is essentially the same as the 6EU7, only with a different pinout.
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Old 28th December 2010, 10:00 PM   #3
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Thanks, but I need a 6V heater. The Tranny's I have don't have 12 V or 6-0-6.
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Old 28th December 2010, 10:10 PM   #4
Arnulf is offline Arnulf  Europe
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Quote:
Originally Posted by Troncones View Post
Thanks, but I need a 6V heater. The Tranny's I have don't have 12 V or 6-0-6.
Wire both heaters in parallel (as many/most people do).
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Old 28th December 2010, 10:11 PM   #5
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Look carefully at the 12AX7 data sheet for the heater specs and wiring. You can use it with 6.3V, too.
Best,
John
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Old 29th December 2010, 02:02 AM   #6
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Very good. Thanks.
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