Does anyone know where I can find a transformer that puts out both 24 and 48 volts d.c. current to operate secondary clocks? I need a replacement. The transformer I had could output several different d.c. voltages but I have been have been unable to locate a replacement. The transformer was in a simplex clock but the transformer wasn't specific to simplex. The clocks I have are Standard Electric Time clocks and require both voltages to operate.