Just a simple linear regulator with an IRF740 MOS and a small signal transistor like BC550. The maximum power dissipation of the MOS is around 40W, so either don't use low voltages at max current or supply it with a sufficient heatsink, to draw the heat. The current limiting is set to 130mA and can be prefixed with the 5.5ohm resistor. Come to think about it, you can substitute the 5.5ohm resistor with a 3.3ohm resistor for maximum current of 215mA and add a 22Ohm 1/2W trimpot in series to fine adjust the current. The voltage drop across the trimmer will be so little at such little current, that it won't burn up the trimmer. Keep in mind that at 215mA the maximum power dissipation for the MOS will become around 60W, so you decide how to keep it. All resistors should be 1/2W. There is current protection of course. As it is very much needed at such voltages. For the 1uF capacitor don't go above 2.2uF or the output response will be quite delayed. I recommend you keep it at 1uF and increase the 100uF to 220uF, maybe even 470uF. The diodes are 1N4007 for up to 220uF and 1N5408 for 470uF. The transformer is 1:1 isolation transformer. The upper potentiometer is fine voltage control and the bottom one is course.
