Hey Eric, you got me to thinking about the other transistors, PNP. Ignoring the resistor values, the below schematic should provide 12V to the motor?
**broken link removed**
Then all I have to do is add the diodes and the other three transistors for the other direction. Is it right to say that Q1 doesn't need a resistor on the base because it's actually on the emitter? Also it appears that the hFE of Q1 doesn't matter either as it will only make a very small change because we are dealing with small currents (20mA for Q1 C and E)?
Depending on the resistor on Q1 emitter it changes the mA of the Q2 base, how can we know the maximum mA that Q2 base can accept?
**broken link removed**
Then all I have to do is add the diodes and the other three transistors for the other direction. Is it right to say that Q1 doesn't need a resistor on the base because it's actually on the emitter? Also it appears that the hFE of Q1 doesn't matter either as it will only make a very small change because we are dealing with small currents (20mA for Q1 C and E)?
Depending on the resistor on Q1 emitter it changes the mA of the Q2 base, how can we know the maximum mA that Q2 base can accept?
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