(JP7327327-A)      A vehicle alternator delivers 12V DC. The emitter (12) of an n-p-n power transistor assembly BJT (14) is connected to the alternator and the collector (16) is joined to the electrically heated catalyst EHC (18). The base is joined to the source (22) of a p-channel insulated gate, FET (24). The base (34) is connected to an engine controller.    Current may be diverted to the electrically heated catalyst as long as needed but is subsequently supplied to the 12V battery (40) and other loads (41).    ADVANTAGE -   Heavy electrical loads can be supplied by diverting current when required and subsequently reconnecting battery charging and other loads.    (US5523547-A)      An electronic system for diverting current to an electrical load, said system comprising:    an electrical energy source with an output;    a first electrical load electrically connected to receive electric current from said electrical energy source;    at least one other electrical load;    first switching means for switching an electric current;    second switching means responsively coupled to said first switching means and further connected in series with said first electrical load for controlling a current flow from said electrical energy source to said first electrical load in response to said first switching means; and    blocking means for blocking electrical current flow between said electrical energy source and at said least one other electrical load if a voltage at said output of said electrical energy source is not greater than a voltage of said at least one other electrical load by a predetermined amount.    (EP676848-B1)      A vehicle alternator delivers 12V DC. The emitter (12) of an n-p-n power transistor assembly BJT (14) is connected to the alternator and the collector (16) is joined to the electrically heated catalyst EHC (18). The base is joined to the source (22) of a p-channel insulated gate, FET (24). The base (34) is connected to an engine controller.    Current may be diverted to the electrically heated catalyst as long as needed but is subsequently supplied to the 12V battery (40) and other loads (41).    ADVANTAGE -   Heavy electrical loads can be supplied by diverting current when required and subsequently reconnecting battery charging and other loads.