I'm trying to build a unit which will convert mains voltage (230vac) to approx 80vac. I have a similar product which I know works for my propose - but it works in a way I don't quite understand. There is a resistor before the output/load and another one in parallel to it.
Here is a diagram of how it looks, with the switch and fuse removed. I've used a bulb to represent output/load. The transformer has a primary coil of 220V and two secondary coils of 24v.
Why has this been done? What advantage does it have over not having the resistors?
EDIT1: The two secondary coils are connected, presumably to make one large coil.
EDIT2: The circuit will be used to power an A4 sample of Smart Glass, which will need around 2W (defiantly no more than 5W). The circuit does have a switch, which I was surprised to find was placed in the 80V circuit. (ie after the transformer)