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This slide reviews what the motors are doing in the previous applications. In housing equipment or white goods, valve control is the most typical use of a motor. If precision is required for inflow control, a stepper motor is used. For simple opening and closing movement, a forward/reverse brush motor can be used. At the top of the slide is the example of controlling a valve by hand, such as sprinkler systems that use garden hoses. The low current consumption drivers that were discussed can run these for many months without the need to change the batteries. The operation of panning and tilting is shown next. Panning is the left and right motion, while tilting is up and down. Low vibration is required for lenses with higher magnification because even the smallest shaking will blur the image. Using a micro-stepping capable stepper motor is a good way to reduce vibrations caused by the motor drive. For toys, Lego is using the LB1836M in many of their products. The bulldozer not only moves its blade and ripper up and down, but is capable of forward, reverse and spinning left and right. The winding up of the winch is also implemented using this part. Brush motors are used in these applications. In the toy industry, design cycles are very short. There is usually no additional production once the first run of products runs out unless the toy is successful. If not, production is terminated immediately. Designers tend to have many development projects running concurrently. This tends to cause them to use easily access-able devices. Sometimes the samples provided for evaluation are used in their prototypes. For this type of application, it is recommended that a selection of products is provided because they often design in what they have in their desk or lab.
