摘要 |
PROBLEM TO BE SOLVED: To provide a Peltier element driver of the control system for preventing penetration current in a H bridge with noise suppressed.SOLUTION: In a Peltier element driver, which keeps a Peltier element connected between a connection point between a first switching element and a second switching element and connected between a connection point between a third switching element and a fourth switching element, the switching elements connected in series between the power source and the ground, controls the respective switching elements configuring an H bridge, and makes current flow to switch the heat radiation side and the endotherm side, one of the first and fourth switching elements or one of the third and second switching elements are closed in accordance with current directions of flow through the Peltier element to control current according to current amounts flowing through the Peltier element in the other when one of first and fourth switching elements is closed, and in the other when one of third and second switching elements is closed.SELECTED DRAWING: Figure 1 |