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The measured second-harmonic distortion of the circuit is –50 dB at 100 kHz and –40 dB at 500 kHz, for a 50-mV p-p sinusoidal signal. Note that the 4N25 can exhibit wide device-to-device variations in frequency response, so you might want to either select optocouplers or tailor the component values in the circuit to obtain the desired response. DATASHEET 6 PIN DIP PHOTOTRANSISTOR PHOTOCOUPLER ... 4N25, 4N26, 4N27, 4N28, H11A1,H11A2, H11A3,H11A4, ... Microsoft Word - DPC-0000045_4N2X_3X_H11AX Series Datasheet ...
Optocoupler DC Input 1 Channel Trans w/ Base DC Output 6-Pin Specifications This optically coupled isolator is consists of an infrared light emitting diode and NPN silicon photo transistor.
A Opto-coupler is a electronic component that transfers electrical signals between two isolated circuits by using light. one of the important function is to prevent high voltages from affecting the system receiving the signal and have been used for a variety of applications, ranging from industrial equipment such as inverters,home appliances, air conditioners and power generation systems. I discovered that the 4N25 model delivered with LTSpice IV (v4.23g) gives a CTR of 74% (measured in a LTSpice simulation), while the typical CTR (acc the datasheet) is 50%, and the minimum CTR is 20%. 4n25 datasheet pdf,the appliction notes, circuit diagram, schematic circuits,voltage, pin, pinout, output for 4n25 as well as the tutorial, equivalent spec on 4n25.