I have a dual primary (0-120V,0-120V) transformer with dual secondaries (0-6,0-6). For a quick test of an amplifier board, I need a 12-0-12 supply.
What would happen if I wired the 2 primaries in parallel (or used just 1) and connect them to the local 240V supply? Logic says the number of primary windings would halve and I would get the 0-12, 0-12 output that I need.
Or would it just smoke?