[sdiy] Site with lots of interesting hum/noise info

[Tom May]

There have been a couple discussions about hum and other noise here
recently.  The Jensen Transformers site

http://www.jensen-transformers.com/

has a lot of interesting information on this topic, including a
trouble-shooting guide with some step-by-step procedures (and a quote
from Bob Pease, no less), and a paper "Hum & Buzz in Unbalanced
Interconnect Systems", among others:

http://www.jensen-transformers.com/apps_wp.html

Also some schematics, many of which show how to use their transformers
in various situations, but also things like "Simplified Measurement of
Output Impedance" and a bunch of mic preamps:

http://www.jensen-transformers.com/apps_sc.html

Tom.