MOTOR DRIVE CIRCUIT

This invention provides a motor drive circuit, which makes it possible to prevent braking when a power supply voltage is lower than a predetermined voltage while suppressing at a low cost a rise in a voltage on a power supply line when a kickback occurs. The motor drive circuit is formed to include first and second power supply lines connected with and shunted from a power supply, an H-bridge circuit, and a means to control the H-bridge circuit. The means controls the H-bridge circuit so that a regeneration path is not created in the H-bridge circuit when the power supply voltage is lower than a predetermined voltage.