• 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.

correctly connecting PT for 110/220 volts

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Hi all,

I have got this amp stripped but forgot to take notes.... again......
Although i was smart enough to write down the OT connections this time, I forgot the Power transformer connections between main, 110/220 switch and the PT...

But I Need to connect this PT to the 220v (236) we have over here...

Do i use both the 0-110v connections?

Also there is already a conection between the 230mA and E connection which is also connected to ground? and I wonder why...

Thanx..... again.....
 

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looks like there is a 110v-0-110v connectiong.
you should test 230volt across the two 110s, and just forget about the 0.
probably a senter tapping.
and allso connect a 50-60 watt light bulb in series with the transformer, so it it doesnt work it just lights up instead of killing the transformer.
 
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