> Danny, this would be similar to one side of the high-side of an
> H-bridge. The 5V control (from the PIC presumably) goes to
> the base of an NPN, which in turn controls the base of the PNP
> high-current switch in the +ve. The NPN not only isolates the
> PIC from the 12V on the PNP base, but also amplifies the PIC's
> pin current. The bulb hot goes to C and cold side to 0V



Szaiklai pair, right?



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