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Current Transfer Ratio (CTR) and Response Time of Photocouplers / Optocouplers | Renesas Electronics就是有些人很愛在後面五四三... iii. Change of CTR over operating time The CTR of a photocoupler is based mainly on the following factors. The luminous efficiency of the LED (light-emitting diode) The optical coupling efficiency between the LED and the photo-transistor The photo-electri...
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