When everything else is in place its time to mount the transformer. The header pins and
transformer mount it on the same side of the board as the screenprint showing the transformer
and the numbers 1-6.
First place your header pins in the two rows of numbered pads. Make sure they’re perfectly vertical.
You can place them into place on the main board while you’re soldering to ensure they remain
straight.
One side of the transformer will be marked with a P (primary). Ensure you get that right when
mounting it into the daughterboard. Drop it into place, bend the support lugs out to hold it firmly on
the board, then solder the six pins into place.
Now line up the header pins with the corresponding pads on the main PCB, and solder in place.
Keep it fairly close to the main board level so the solder pads have no chance of touching the
enclosure when its eventually mounted in the box. It only needs to sit around 3-4 mm lower than
the main board.
POWER
There are two sets of V
and G pads. Both connect
directly together so you
can use either. the ones
closest to C6 are placed
for the shortest possible
connection in the
pre-drilled enclosure with
top-mounted DC.
