xfmr trim

[dubiousss]

im building a string ringer and have come up against seeing you need an xfmr trim on the attached board, can i just use a normal trim pot? what is this xfmr and is it different?

[anchovie]

Xfrmr is shorthand for Transformer. Can you link to the information that you have read?

[dubiousss]

its used in this:
http://homepage.ntlworld.com/paul.nelson666/StringRingerv12r.pdf

[Ripthorn]

That trimpot controls the amount of feedback from the secondary of the transformer back to the primary.  I would think you could just use a standard trim pot there, since feedback loops are typically very low power (even in high voltage tube amps you can get away with 1/2W resistors).