Simple transistor question
Bob Blick email (remove spam text)
>Then the transisor won't be saturated because the 5V output from the PIC
>isn't high enough relative to the collector voltage.
Actually this is the best way to do it. From base to emitter there's a
diode junction(0.6 volt) and as long as you have current flowing through
it, the transistor will conduct collector-emitter.
>Now Bob Blick has an HBridge motor drive that uses a darlington configuration
>with no pullup between the high voltage and the base of the drive transistor.
Look at the lead-in page to the schematic, I've shown the internal
schematic of the darlington transistors I used. They have built-in
pinch-off resistors and also collector-emitter diodes, saves external parts.
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