[Bar Nash]

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

[Phil Allison]

"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

[Ian Bell[_2_]]

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