The new post-regulator board with SMD components is also finished. Connection with pre-regulator is now accomplished using single connector. This board just as previously presented pre-regulator is 60x100mm that is within limits of
Eagle freeware edition (that means modifications is also possible on top of opening and viewing). No errors is found in layout and no additional cuting and wiring was required this time
.
The bare board looks like this:
Assembled (everything is hand soldered, connectors for manual OE and DP control and CC/CV LEDs were not mounted):
Mosfet pre-regulator and post-regulator when connected occupy 122x100mm:
Mounted on
SK85/50/SA heatsink that is enough that without fan temperature (Tamb=25oC) goes to 60oC with 3A load:
With this a hardware part of the adventure is mostly finished. Actually what is still missing is manufacturing of the front panel that do not cost a fortune and can be easily obtainable to anyone. That topic is already discussed in this thread but I'm still not sure what to do.
Anyway in the time that comes focus will be on the software part. First with "boring" SCPI that will offer remote control using serial (via USB on Arduino board) or Ethernet (on
Arduino PSU shield) communication. Support for local control using TFT touch-screen will follow.
Of course detailed BOM with parts number for TME and Farnell are in preparation and will be published together with Eagle "source" files (PCB schematics and routing).