Supply inductance output characteristics with which characteristics

In optocoupler internal, because the light emitting tube and the coupling capacitance between the small (2pF or less) so common-mode input voltage through the coupling capacitance between poles has little effect on the output current, and thus a high common-mode rejection ratio. Inductive Output characteristics: optocoupler output characteristic is defined as the emission current IF, the photodiode and the applied bias voltage VCE relationship between the output current IC, when IF = 0, the LED does not light, this time The photosensitive transistor collector output current is called the dark current, generally small. When the IF> 0, the effect of certain IF, the corresponding IC is substantially independent of the VCE. IF IC with a linear relationship between the change, with the semiconductor curve tracers measured optocoupler output characteristics and output characteristics similar to ordinary transistor. The test connection shown in Figure 2, the D, C, E three lines corresponding to B, C, E electrode, connected to the instrument socket. Shenzhen high inductance recovery: www.szsenyuanhs.com