Here's 300W SMPS based on PC power supplies.
A few pictures are not my,i'ts from my friends.
Base drive transformer is toroid from CFL lamp.
Storage core is yelow toroid core from PC PSU too.
They have 0.5V per one turn.You can use more cores glued together.With two cores value is 1V/turn.
You can calculate it this way:
Uout * 2 / number of cores.
This coil is attached after output diodes and before electrolytes.
I posted pictures,all is on it :)
Schematic is for 12V,for other voltages ee33 have 4V per turn.Resistor on output can be calculated this way: R=Uout/0.02
A few pictures are not my,i'ts from my friends.
Base drive transformer is toroid from CFL lamp.
Storage core is yelow toroid core from PC PSU too.
They have 0.5V per one turn.You can use more cores glued together.With two cores value is 1V/turn.
You can calculate it this way:
Uout * 2 / number of cores.
This coil is attached after output diodes and before electrolytes.
I posted pictures,all is on it :)
Schematic is for 12V,for other voltages ee33 have 4V per turn.Resistor on output can be calculated this way: R=Uout/0.02