Contents
What is an H-bridge Why do we need one instead of just using the Arduino alone?
The H-bridge is the glue layer between the motive energy and the logic to control the motor. Basicly because the pins on your arduino can’t handle the current required to run a DC motor and useing an h-bridge both solves that problem and also let’s you reverse the motor direction if needed.
Why is an H-Bridge used?
An H-bridge is an electronic circuit that switches the polarity of a voltage applied to a load. These circuits are often used in robotics and other applications to allow DC motors to run forwards or backwards.
What are the specs for a H bridge?
The TB6612FNG has the following specifications (the specs are for each of the two H-Bridges in the package): Motor supply voltage of 2.5 to 13.5 volts DC. Logic supply voltage of 2.7 to 5.5 volts DC. Output current of 1.2 amperes continuous, 3.2 amperes peak. Built-in thermal shutdown.
When do you use the H bridge arrangement?
The H-bridge arrangement is generally used to reverse the polarity/direction of the motor, but can also be used to ‘brake’ the motor, where the motor comes to a sudden stop, as the motor’s terminals are shorted, or to let the motor ‘free run’ to a stop, as the motor is effectively disconnected from the circuit.
What makes an H bridge an integrated circuit?
Structure of an H bridge (highlighted in red) H bridges are available as integrated circuits, or can be built from discrete components. The term H bridge is derived from the typical graphical representation of such a circuit. An H bridge is built with four switches (solid-state or mechanical).
Can A H bridge be used to control a DC motor?
The most common method of controlling a DC motor is to use a device called an H-Bridge. This type of controller allows you to control both the speed and direction of a DC motor, and a pair of H-Bridges can also be used to control a bipolar stepper motor. We have used H-Bridges in many of our projects.