HIV (human immunodeficiency virus) is a virus that attacks the immune system, the body's natural defense system. Without a strong immune system, the body has trouble fighting off disease.
Servo-Tek Distributor: DC Tachometer Generators. A Servo-Tek DC tachometer generator provides a convenient and economical means of converting rotational speed into an isolated analog voltage signal suitable for remote indication and control. Combining high accuracy with low driving torque, Servo-Tek tach generators are ideal for use in servo systems. Tach Generators are particularly suited to application in precision integrators and velocity servos, both of which require a highly linear speed/voltage relationships with minimum ripple.
A typical Servo looks like a rectangular box with a motor shaft coming out of one end and a connector with three wires out of the other end. The three wires are the power, Control, and Ground. Servos work with voltages between 4 and 6 volts. The control line is used to position the servo. The servo motor comes in different sizes, which affect the overall size of the servo. The gears of a servo vary from servo to servo. Inexpensive servos have plastic gears, and more expensive servos have metal gears which are much more rugged but wear faster.