transistors - High side or low side LED driver with NPN BJT? Which is better? - Electrical Engineering Stack Exchange
Resistor configuration on MOSFET high side/low side switches - General Electronics - Arduino Forum
transistors - PNP high side switching with 100 mA load - Electrical Engineering Stack Exchange
High side switch with P-channel MOSFET - General Electronics - Arduino Forum
High Current High Side Switching - General Electronics - Arduino Forum
Electronics and Embedded Systems, Microcontrollers, Arduino: Low Side switching and High Side Switching for Arduino/ microcontroller based applications