![]() Transformers are AC operated, there is no polarity, the primary wire on the new transformer are black, the Philco ones are white, connect everything that was connected to the white leads to the black leads. ![]() Draw it with the yellow 5 volt winding at the top, and the windings will now be in the same position as they are on the original schematic.Įxperience is what you gain when the results aren't what you were expecting.Īs far as I know nothing will burn out the transformer short of overloading it. If it would help, you can redraw the diagram found on your new transformer, reversing everything to the opposite side so the 3 windings are on the left and primary on the right. The 6.3 volt winding for the other tubes was black on the original and green on the new one. The center tap of the HV winding was green on the original, and red/yellow on the new one. The HV winding to the 5Y3 plates was yellow on the original and red on the new one. The 5 volt winding for the rectifier filament was blue on the original, and yellow on the new one. ![]() ![]() In this case, the original had white leads on the primary, the new one has black. You have to determine the function of each winding and connect replacements accordingly. Philco power transformers can be very confusing because they do not follow the standard RMA/EIA color codes. ![]()
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