German ESSA encoder ESSA model ESSA price

ESSA encoders are devices used to measure rotational speed and, when combined with PWM technology, enable rapid speed adjustment. Optical rotary encoders convert mechanical quantities such as angular displacement and angular velocity of the output shaft into corresponding electrical pulses via photoelectric conversion, outputting them as digital signals (REP). They are available in single-channel output and dual-channel output types. Key technical parameters include pulses per revolution (ranging from tens to thousands) and supply voltage. Single-channel output means the rotary encoder outputs one set of pulses, while dual-channel output rotary encoders output two sets of pulses with a A/B phase difference of 90 degrees.