Simple H Bridge. In the image above the load is the m connecting the two sets of switches. You normally use it with a microcontroller such as an arduino to control motors.
2n3904 is another common. In the image above the load is the m connecting the two sets of switches. The 555 timer the timer is a simple 555 circuit that generates a duty cycle from around 10 to 90.
Current starts flowing through the motor which energizes the motor in let s say the forward direction and the motor shaft starts spinning.
The basic operating mode of an h bridge is fairly simple. Only a handful of parts are needed. The 4 transistors act like 4 switches so by turning on one diagonal or another you can make the motor turn forward or backward. The 555 timer the timer is a simple 555 circuit that generates a duty cycle from around 10 to 90.
