.. as well for now. The coils The RM10 core and the two 12 uH coils weren't available either so I had to buy some cobber wire and some ferrite cores and do the coils myself. I got a spool of 0.75 mm insulated cobberwire, a couple ferrite ...
.. a spot of epoxy in it to keep it from making noise [...]. RM is a generic classification for this type of ferrite core, and 10 is the size. If you can't find one, you can use a clamshell open core such as sold by RadioShack for reducing ...
.. design. First is a 6 amp Polyswitch fuse, it is self-resetting, and also protects against high temperatures. Next is an 18 volt surge absorber. Finally, the circuit has current limiting using a method I invented that limits based on ...