H-bridge circuit

　・In Japanese
premise knowledge
　・Transistor
　・Freewheeling(Flyback) Diode

Describes the H-bridge circuit. As a method of changing the direction of rotation of the motor, four switches (transistors) are combined and switched two by two. Such a circuit is called an H-bridge circuit because it has an H shape.



Actually, a freewheeling diode is installed in parallel with the switch as shown below to prevent switch breakdown due to flyback when the switch is off.

■Applications for H-bridge circuits

　- The direction of rotation of the motor can be changed.
　- Used in inverter circuits, direct current can be inverted to alternating current.
　- Used for differential signal transmission in serial communication.

List of related articles TOP MENU Electrical/electronic circuit ・Freewheeling Diode ・Alternating current ・Termination resistor ・CPU, LSI, IC, ASIC ・Adders, Subtractors ・H-bridge circuit ・Motor type ・Inverter ・AC-DC converter ・DC-DC converter ・ROM, RAM, register, cash ・open/short circuit failures ・Low-side, high-side driver ・Mechanism of electric shock ・Zener diode ・Rectifier circuit ・Pull up/down resistor ・Joule heat ・Solenoid valves, relays ・Comparator