Parameters
Control voltage same as switched voltage (more or less).
Uni-directional, perhaps an opto-coupler would be best trigger? That an your run of the mill 555 for timed events.
Ambient temp of heatsink before powering up 30C
Switched amperage maximum 80. Will use freewheeling hyperfast diode, TVS, caps, to attenuate transients, and surges with inductive loads.
How large a PCB board and heatsinks is another issue. I do not trust convection so I will be digging up some 5vdc ball bearing fans and powering them with 7805's.
Pfft. Hairpin alternators, and lithium Ion obsoleted me in one respect. I'll scuttle sideways and punt.
Thanks for your help gentlemen.
