[Al Skierkiewicz]

Erik,
You are right that switching supplies are a little more unforgiving of motor loads, but the output circuit is essentially the same as an unregulated linear supply. i.e. AC transformer winding feeds a diode rectifier which in turn feeds a low pass (capacitor) filter to smooth the DC voltage. The only difference is that the high frequency of the switching supply does not require the large (high value) capacitors needed to form a 60 Hz low pass filter since their operating frequency is much higher. Unfortuantely, feeding FHC is like starting a motor, the inrush current to charge the caps may trip the supply.