• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

OPT winding orientation

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MlinarS

Member
Joined 2005
Hello all,
Does any of you know how are windings on TANGO XE-20S oriented? I opened the hood but trafo is submerged in black resin so I can't see the windings. The only thing I can see is two bunch of wires comming out of the resin on the oposite side of the box and are terminated at the prim/sec terminal pins. Thanks for help.
 
EC8010

EC8010

Ex-Moderator
Joined 2003
An output transformer can easily cope with mains across its primary, then use any transformer (or choke) of known orientation connected to an oscilloscope (or headphones). Maximum output is when the two coils are on axis. I have a search coil specifically for this task.
 
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