Ra on C3g and 6C45pi? - diyAudio
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Old 5th May 2013, 10:49 PM   #1
Ryssen is offline Ryssen  Sweden
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Default Ra on C3g and 6C45pi?

Anyone knows?Cant find it in any datasheet that i find..
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Old 6th May 2013, 07:38 AM   #2
euro21 is offline euro21  Hungary
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Telefunken C3g datasheet first page:
pentode mode: Ri:300k
Triode mode: Ri: 2.3k
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Old 6th May 2013, 12:59 PM   #3
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You can easily calculate rp. It is mu/s.
In case of 6s45p-e, mu = 52 and s = 45 mA/V.

But remeber that the value of s depends strongly on the used Ia.
For example in case of triode connected C3g; when Ia = 4 mA, rp = 5 k-ohms.
The specified 2,3 k rp requires 17 mA anode current.
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Old 7th May 2013, 08:09 PM   #4
Ryssen is offline Ryssen  Sweden
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Ok,thanks for the answers.
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