Actual an isolation transformer may be physical the same as a Step up/Step Down transformer. The main difference is in the idiom they are utilized. Another difference is that in a normalcy transformer here velleity be trimmer between the yoke windings, between the windings and core, between the core and shell, etc. These capacitances bring in high frequency crackle from outside, which will need transmitted in the secondary circuit. So [in an isolation transformer] wires are connectedness between each component, (not direct contact, but with insulation present). This permits a leakage current and eliminates unnecessary capacitance. Sufficiency I could make a start to answer this question. Isolation primary coil: is a transformer with two separate windings, the primary and the secondary. There is an electrical privateness between the primary and the secondary. Nearly any type of transformer with two non-connected windings could be considered an "isolation" transformer, in that technology electric isolates the primary voltage from the secondary electrical phenomenon. Hither are also transformers with one winding (called auto-transformers) and connections for input and output. If the input is low voltage and the output a higher, then you can say it is a STEP-UP secondary winding. If the input is high and the give is low, point you can say it is a Palliation. This type of transformer can not by used where safety is a large factor.