ST123 Tranformer

From:  Fred Decker [SMTP:fdecker-at-csi-dot-com]
Sent:  Saturday, May 09, 1998 11:56 AM
To:  TESLA; tesla
Subject:  ST123 Tranformer

I have an ST123 Transformer from Super Electronic Products.  Just found it laying around.  It has a 115v primary and a 1750-0-1750 tap.  What is it and what can it be used for.