The assembly is small and compact by using a printed circuit board (PCB). You should pay special attention not to reverse the position of the electrolytic capacitors, also not exchange regulators, in practice it can be seen that the pinouts of the two differ, what should be observed closely because their investment destroyed immediately. The transformer according to the line network and by secondary output 5A.
The contact zone between regulators and the heatsink must be isolated and soak special silicone that help dissipate heat on the radiator, take special care to insulate all terminals thereof and which also would be broken because of a short circuit.
