开云体育

From: Craig Sawyers <c.sawyers@...>
Sent: Dec 9, 2018 4:53 AM
To: [email protected]
Subject: Re: Tube test adaptor for Tektroinx 575 was: Re: [TekScopes] FS: miscellaneous Tektronix manuals

A center tapped filament transformer, or a 'hum balance' circuit to create an artificial center tap
will do
even better. That circuit was often no more than a 200 ohm pot across the winding, with the wiper
connected to ground, and both filament leads floating above ground. A 2W pot was common for this
use.


Michael A. Terrell

The other common term (at least on my side of the pond) was hum bucker.

Craig