Homebrew PCBs

William Laakkonen <worldradiolabs@...> writes:
> I can appreciate winding a toroidial transformer such as that on your
> photos. I guess you mounted it on a PCB assembly to make rework easier?

Well, each "winding" was 2-5 individual wires wound in parallel.  The
little PCB combines those into single pins with a known footprint so I
could design it into a power supply.  Otherwise, it would be too easy to
lose track of which of the 40 or so ends sticking out are which.

I mean, imagine trying to solder this to a big pcb:

    www.delorie.com/electronics/bldc/transformer/img_2429.html

I did end up reworking it, though.  The small windings for the control
supplies (15v) needed another loop (they only have 8 loops) but at least
they were on the outside (I figured those might need tweaking).  I was
able to make the changes without taking it off the little pcb.