6N136#020

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Optoisolators are electrical components designed to provide electrically safe electrical isolation between input and output circuits. In particular, 6N136#020 optoisolator is an isolation device in which an internal photovoltaic device is used to couple an input signal to an output transistor. This device works by using an infrared LED as a transmitter, and receives the signal through a phototransistor. Optoisolators using transistor output (such as 6N136#020) are generally used to switch around 5V, with input control current up to a maximum of 50mA.

General Structures

The structure of 6N136#020 optoisolator consists of a photodetector, a light emitting diode (LED) as output, and an insulation barrier. The LED converts electrical signals into light signals to be transmitted as input through the photodetector, which include a photovoltaic cell or phototransistor. The insulation barrier helps to ensure electrical isolation between input and output circuits. The photodetector detects the light signals and converts them back into electricity signals and sends out as output.

Applications

As 6N136#020 optoisolator is typically used as a low-voltage switch, it is used for a variety of applications that require electrical isolation for safety. One example is in industrial motor speed control, where an input signal will control the output motor, and the optoisolator is used to provide a circuit with electrical isolation. Another example is the control of the flow and pressure in industrial process control, such as in chemical plants. Other applications are in alarm systems, where it helps to detect when a certain object has been displaced or moved.

Operating Principle

The 6N136#020 optoisolator is a three-lead device, with leads for the photodetector, output, and ground. The working principle of this optoisolator involves an electro-optic effect, in which an input electrical signal will cause the LED to emit light, which will be received by the photodetector. The photodetector will then convert this light signal into an output electrical signal, which will be sent out through the output lead. The output lead can be connected to an external circuit, where the output electrical signal will be used to control a device.

To ensure electrical isolation between input and output circuits, some optoisolators use a phototransistor to detect the light signals instead of a photodetector. In this case, an electrical signal is sent through the LED that produces light, which is picked up by the phototransistor. The phototransistor will then send an output electrical signal, which is then passed through the isolation barrier to the output lead.

Conclusion

The 6N136#020 optoisolator is an electrical device designed to provide electrical isolation between input and output circuits. It works by using an infrared LED as a transmitter, and receiving the signal through a phototransistor or a photodetector. This device is typically used as a low-voltage switch in a variety of applications that require electrical isolation for safety such as in industrial motor speed control, process flow control, and alarm systems. It works by an electro-optic effect, in which the light signals emitted by the LED are converted into electrical signals by the phototransistor or photodetector, and sent out through the output lead.

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