Human Immunodeficiency Virus, commonly known as HIV, is a virus that affects the immune system by destroying white blood cells known as CD4 cells. These cells are responsible for fighting disease.
Servovalve, Hydraulic-Description. A hydraulic servovalve is a servo (see Servo, Hydraulic â Description) with a device (either flapper nozzle or jet pipe) used to position the servo. The term electrohydraulic servovalve is often used because servovalves are controlled through an electrical signal.
Servos are relatively new being one of two types of motors used on industrial machines. The other kind you may be more familiar with is a clutch motor. Clutch motors are noisy (I like the sound); servos are completely silent, as quiet or more than a home machine even at top speed. Stuart wrote a review of a servo motor.