9/23/2023 0 Comments Opto isolator circuit diagram![]() ![]() Using 4N35 optocoupler is very easy, as discussed above the device contains two parts or components an IRLED and a Phototransistor, the LED Anode pin can be connected with the output of the device you are operating or working on (for example any IC or Microcontroller) and the cathode pin of the LED should be connected with the ground of that device, this LED should be handled same as you handle any other LED for example you have to use a current limiting resistor too. ![]() You can also use to detect voltage in AC and DC circuits, at the output of microcontroller Chips, controlling high power transistors, high voltage devices etc. Other than this it can also be used for isolation in electronic circuits. For example you can use it in electronic circuits to save the circuits, ICs and other components from voltage surge or voltage spikes which damages the components. Optocoupler DC-IN 1-CH Transistor With Base DC-OUT 6-Pin PDIPĤN35 optocoupler can be used for variety of general purpose requirements in electronic circuits. Pin3 is labeled with “NC” which means the pin3 have not connection with the internal circuitry. Normally the saturation voltage of transistor is 0.6 or 0.7 volts but 0.3 volts is an ideal saturation voltage for applications where low voltage saturation is required.Īs regarding the IR LED characteristics the max forward current is 60 milliampere and max power dissipation is 120 milliwatt. However the collector-emitter saturation voltage is from 0.14 to 0.3. The max collector-emitter voltage of the phototransistor is 30V and max collector-emitter current is 150mA. There are two base of the internal phototransistor from which it can be controlled one is the photo detection or IR light detection and other is connected with the pin6 of the device, therefore it can be controlled by two procedures at the same time. The working of the device is simple when power is applied to the IR LED which activates the LED, the IR light is detected by the phototransistor and as a result the transistor become saturated or switched ON. The device contains two parts one is an IR LED and the other part is the phototransistor. ![]() 25156ĤN35 is general purpose and widely used optocoupler or we can say it optoisolator & photocoupler & it is available in 6 pin dip and SMD packages. Telecommunication Applications / Circuits.Microcontrollers output to control devices.Compliant to RoHS directive 2002/95/EC and in accordance to WEEE 2002/96/EC.Industry standard dual-in-line 6 pin package.Input-output coupling capacitance Maximum Collector Emitter Saturation Voltage 4N35 Environmental and Export Classifications ![]()
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