The basic function of a
Photo Coupler is that it ensures total electronic isolation, including
potential isolation (as in the case of transformer) in an electrical
circuit. Devices of the Photo Coupler family include Photo Transistor,
Photo Darlington Transistor, Photo Triac and OPIC. These devices have the
characteristics of excellent isolation, high CTR, compact package,
high-speed operation, low decay and unit control function not being
influenced by field effects.
They are most suitable to be
used for microelectronics, data processing and telecommunication system.
Due to their high safety features, they are particularly suitable for use
in switching mode power supply units.
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