PS2021 coupler equivalent, photo coupler.
D Small package: 7.2 x 6.5 x 3.5mm D High isolation voltage: 4000VAC rating D High transfer ratio: 50% min D High speed switching: tr, tf = 3/Ls typ D Economical, compact.
D Interface circuit for various instruments and control equipment
D Chopper circuits D Computer and peripheral manufactu.
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