Using PNP Bipolar Transistors with Arduino, PIC - YouTube
Help] Should I use an NPN or PNP transistor to switch positive side of a bunch of common anode seven segment displays? Why is one better than the other? Thx! : r/arduino
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RESOLVED: help with PNP transistor circuit, please - General Electronics - Arduino Forum
How to Use A Transistor as a Switch | Teach Me To Make
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How can I use a PNP Transistor as a switch? - General Electronics - Arduino Forum
Lab: Using a Transistor to Control High Current Loads with an Arduino – ITP Physical Computing
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Is there a PNP transistor that can be switched on and off by an Arduino? - Quora
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PNP Transistor Switching
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BC547 NPN Transistor as a switch - Arduino example with LED Flash - YouTube
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