1203-80-ML and 1203-80-MS

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VelvetGeorge
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1203-80-ML and 1203-80-MS

Post by VelvetGeorge » Tue Apr 03, 2007 2:44 pm

Here are my stand up and laydown mount 100 watt power transformers.

The extra voltage taps are now standard.


VG
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VelvetGeorge
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Post by VelvetGeorge » Mon May 21, 2007 5:49 pm

A note about the 1203-80-MS: the wire color for the high voltage secondary and 80% taps was reversed on some parts.
According the to diagram above, red is the full secondary (500V) and blue is the 80% taps. On some parts it is opposite.

To be certain which type you have, measure resistance across the winds: red to red and blue to blue.

The high voltage wires will measure 17-18 ohms. The 80% taps will measure 13-14 ohms.

Note that most meters are not terribly accurate at low resistance readings. But one set of wires will read approx 80% of the larger measurement.


george
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