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Analogue Voltage/Ripple Generator Essay Example

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Analogue Voltage/Ripple Generator

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A transistor for controlling the motor only allows movement in one direction. This makes the process very boring. Instead of using transistor, an H-Bridge can be used instead. There are a number of geared motors that can be used for this purpose.Servo motors are also DC motors, which come with motor drivers embedded. They rotate between 0 to 180 degrees. This range is useful for turning robot wheels and controlling robot arms. Servo motors can be modified to support full rotation with use of motor drives. There is normally a notch on one of the motor gears, which stops it from rotating fully. For a full rotation to be achieved, the notch must be removed. The gears are usually made of plastic. One of the motors gears normally is attached to a circular variable resistor (potentiometer), which gives the position of the motor driver as the motor rotates.Brushless Motors are generally really fast motors. They are commonly used for radio-controlled vehicles. They are relatively more powerful as compared to DC motors. To control brushless motors, one would require a motor driver known as an ESC. Brushless fewer motors are very efficient and fast and, therefore, consumes much power.Stepper motors are used for careful position control. The rotation of a stepper motor is relatively easy to control. Stepper motors are more accurate than other motors. One only needs to define the angle of rotation.It is not possible to run motors directly from a microcontroller. A driver is normally required, which is either an H-Bridge for bi-directional movement or simple transistor for one-direction movement. The simplest way to connect a DC motor is to use transistors such as an MOSFET. MOSFET is an electronic component with three pins. One pin normally goes to the microcontroller unit; one goes grounded while the other pin is connected to the motor.An H-Bridge driver is a series of transistors, which helps in controlling DC motor bi-directional manner. They are normally configured to form an H shape, hence the name H-Bridge driver. They are supplied in single chips, normally with two H-Bridges. H-Bridges are very useful in controlling DC motors.When the motor is quickly stopped, it sends a very strong electrical pulse, which can bur the circuit. For this reason, it is important good to add a diode across the motor. The function of the diode is to prevent electrical pulse. Diodes only allow for unidirectional flow of

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