Output 12V2A switching power supply, I would like to change to 12V5A, is not the transformer changed on the line
Is it a bridge rectifier that converts AC to DC. If it should be related to the voltage divider. Switching power supply has not been studied. Ha ha
Not to change the transformer, but should be the transformer capacity increases
Of course, the first high-frequency transformer to be changed, high-voltage rectifier filter electrolytic capacitor to increase, U1 may be changed to mosfet, low-voltage output high-speed rectifier diodes and output electrolytic capacitors have to change, there are other ........ ....and many more! Change to do the test can be changed to use is not recommended to buy an ordinary 12v5A power supply should not be too expensive.
Not yet, at least to change a few points:
1, rectifier diodes. The current capacity to about 10A, and increase the heat sink.
2, pulse width control circuit, to adjust to the appropriate duty cycle.
3, the filter capacitor capacity to increase.
4,5A output along the way of the copper plate thickened solder or thick copper wire.
5, modified, if the switch tube heat, increase the heat sink.
6,220 V AC input fuses increased to 1.5 to 2 times the original.
7, the original 12-volt output circuit is not filter coil, then, to increase the 5A filter coil, the original coil, enameled wire to be bold.
8, increase 12 volts 200 mA DC cooling fan.
