[Amps] SB220 step start blows fuses

Bill Turner dezrat at outlook.com
Fri Jul 7 12:34:09 EDT 2017

------------ ORIGINAL MESSAGE ------------(may be snipped)

On Fri, 7 Jul 2017 10:21:36 -0400, Mark B. wrote:

>A variac varies voltage.   It is not designed to limit current. 


At the very low end of its range, a Variac limits current just fine. I
worked as a calibration technician at Tektronix for years, taking
brand new scopes off the assembly line and powering them up for the
first time. Believe me, a Variac is the only way to go with a unit
which could have any number of problems at first. Over the years I
powered up literally thousands of scopes this way and never a problem
with current limiting. 

73, Bill W6WRT

More information about the Amps mailing list