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#1
Posted to rec.audio.tubes
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dc fillament how acurate ?
Hi all
In case I feed the ecc83 tube with 6.3 VDC , how accurate should this DC voltage be ? How higher and how lower then 6.3 VDC can this voltage go without mulfunioning the tube operation ? Thanks ec |
#2
Posted to rec.audio.tubes
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dc fillament how acurate ?
"Bar Nash" In case I feed the ecc83 tube with 6.3 VDC , how accurate should this DC voltage be ? How higher and how lower then 6.3 VDC can this voltage go without mulfunioning the tube operation ? ** About +/- 10 % is usual. The same as the mains voltage can vary, at least. ....... Phil |
#3
Posted to rec.audio.tubes
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dc fillament how acurate ?
Bar Nash wrote:
Hi all In case I feed the ecc83 tube with 6.3 VDC , how accurate should this DC voltage be ? How higher and how lower then 6.3 VDC can this voltage go without mulfunioning the tube operation ? Thanks ec Heaters are typically specified to be within 10% of the nominal value. I often run tubes l;ike the ECC83 from a 12V supply from a 7812 regulator. The supply voltage is then only 5% below nominal and probably extends tube life. Cheers Ian |
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