![]() Place the top left 2N3906 and the bottom right PN2222A and create all of the connections to them. ![]() For the two different transistors we will use, the pins are as follows: MW 1.) You should create the circuit and test as you go to assure proper connections. On the schematic, the portion of the transistor with the arrow is called the emitter, the portion opposite the emitter is called the collector, and the portion in the center and connected to the emitter and collector by the vertical line is called the base. For this lab you should initially construct the H bridge and test it before continuing to the remaining portion. The PN2222A transistors (NPN transistors) should remain cool to the touch. You should be very careful when making connections and when touching these transistors after the motor has been running. The junction of these transistors will reach a high temperature of approximately 150 degrees Celsius or 300 degrees Fahrenheit. No rotation 1 0 1 In this lab we will make use of 2N3906 transistors (PNP transistors). No rotation the motor rotates in the reverse" direction the motor rotates in the "forward" direction no current flows through the motor. ![]() There are two input connections to the bridge giving four possible combinations: Forward Reverse 0 0 0 Effect on the Motor no current flows through the motor. The motor is connected from one side to the other and forms the "H". Matlab and Arduino DC Motor Control Using an H Bridge An H bridge is a combination of two types of transistors joined together to form a complete square. ![]()
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