A LOAD BANK SYSTEM AND METHOD THEREOF TO GENERATE LARGE NUMBER OF DISCRETE LOADING STEPS

The present invention relates generally to Load Banks for testing generators and electric power sources and more particularly the present invention discloses a load bank system circuit topology and method thereof, to generate large number of discrete loading steps. The system and method thereof employs at least five switches RL, RL, RL, RL, RL, at least five resistors R, R, R, R, R, the R a special tap resistor having at least one tap movable along the length of the resistor R and divide the resistor into parts, at least two terminals, terminal T, terminal T for connecting the load bank to a power source under test, to generate a large number of loading steps having minimum number of duplicate loading steps, minimum number of high power difference loading steps, high maximum to minimum load ratio and lowest value average resolution of the loading step.