about toroidal transformer, i take 80VA transformer with 2x15v or 2x18v, but there is no output for 5v power supply.
this is why I take a toroidal model: I remove the plastic on it and I put around the core a new copper wire (about 40 turns 1mm2). I get about 7.5v AC.
for a czech dx amateur (stan) i am testing a chinese board (220vAC to 24vDC) the output is 24V DC 12.5A max (300W!!!!) i also have a 36VDC 7A to test. these products are cheaper than my toroid solution!!
For Stan i add a second board to manage a second azimut actuator and another actuator to move a board where there is LNB !!
four actuators !!!!