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About information presented in this cross reference

The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.

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光耦的特性(电流传输比:CTR)

晶体管耦合器的电流传输比:它是用输出电流相对于输入电流的放大率来表示的,比如晶体管hFE

电流传输比=CTR

=IC/IE=输出(集电极)电流/输入电流×100(%)

光耦的特性(电流传输比:CTR)

例如:

当输出是IF=5mA时,得到IC=10mA

CTR=IC /IF=10mA/5mA×100(%)=200%

电流传输比

参考:双极晶体管的hFE

hFE(直流电流增益)

   =集电极电流(IC)/基极电流(IB

参考:双极晶体管的hFE

第Ⅴ章:隔离器/固态继电器

光半导体的类型
LED的发光原理
LED的波长范围
什么是光耦?
为什么需要光耦?
光耦的类型
光耦的类型(封装)
光耦的类型(内部结构)
光耦的安全标准
光耦的主要特性(触发LED电流)
光耦的老化变化数据
如何使用光耦
如何使用光耦“输入电流”
如何使用光耦“输出电流”
如何使用光耦“输出侧电阻器”
如何使用光耦检查

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