SD-4 All Silver Electrical Speed Controller
SD-5 Speed Controller for 2006
Most
of the transistorized controllers available
in the
USA use variations on the same circuit, conversions and Parma based controllers
from Tony Ruiz and John Cukris are fine examples. There are lots of other
transistorized circuits that could be used, the following applies to this
commonly used circuit. Difalco controllers work on a different transistorized
circuit design. Diode controllers, sometimes called passive electronic
controllers such as the Cidex Omi and Professor Motor also work on a different
circuit.
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