[R-390] Re: BallasTube Question

[David Wise]

If it's fully lit, it's not regulating.
If you don't mind a clumsy adaptor or
an incompatible mod to the IF deck,
supplement the 3TF4 with a 22-ohm 5W
series resistor.

73,
Dave Wise (SWL)

> -----Original Message-----
> From: Drew Papanek [mailto:drewmaster813@hotmail.com]
> Sent: Thursday, July 17, 2003 1:28 PM
>=20
> The 3TF7 is specified for 290-330mA over a range of 8.6 to=20
> 16.6v, the 3TF4=20
> regulates at 280-320mA over a range of 4.3 to 8.3v.  Outside=20
> voltage range=20
> the current range is not specified.  I'd say that your=20
> BallasTube is on its=20
> way out, but if it isn't hurting the 6BA6's, what the hey.