( 1 ) Measure the three foot of IGBT with multimeter RX10kΩ without damping tube, one of which is infinite with the other two feet, this foot is G, and the other two feet are C and E. In the test, there are two feet with a certain resistan…

l Network resistors In the circuit design, the network resistor is also used. The network resistor has the advantage of being neat and less space-consuming than the color ring resistor. The inside of the circuit is actually arranged neatly…