Freq range x2 disc 50hz-2khz; aperture 5mm dia; ref signal npn open collector; output transistor vce 30v max, ice 200 ma max, vce (sat) 0.25v at 100ma; plus 5v supply: 5v porm 0.25v, 10 ma max; external freq setting control signal 100hz/v dc x scale factor, 10v max; accuracy porm 1 pct; cone angle f/2; input voltage 114-230v, 50-60 hz, ac; dimensions: chopper 150 mm diameter x 100mm, power supply 180 w, 150 deep, 130 height; weight: chopper 0.75 kg, powwer supply 1.75 kg; mounted on 13.7mm pin; speed of 40: 1; used to produce pulsed light; used with synchronous or lock-in amplifier systems
