How to transform the switching power supply, the original AC 220 input into DC 84-100 input output unchanged
It is difficult to change, you can consider the use of ready-made DC-DC converter
Transformation is more trouble. AC 220 input, the DC voltage is about 300 volts, switching power supply in the transformer starting point is generally greater than 100 V, your DC input voltage can not meet the requirements of the start. The The Unless you change the transformer, this change is big. The The
Or you make a Boost boost circuit, your DC input voltage increased to 200V or so, so, only close to the AC 220V input terminal, can also be used.
If the request is not high, can be used directly, do not change. Switching power supply can be adapted to such a voltage range, if the original undervoltage protection, it will be lowered.
Power is not large, you can change the original rectifier part of the voltage rectifier.
