1200720869

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1200720869, also known as 4N25, is an opto-isolator containing an infrared emitting diode and a phototransistor, enclosed in a 6-pin DIP package. This opto-isolator is used to provide electrical isolation between two separate circuits by using light instead of a direct electrical connection. It helps to increase the insulation strength of the application circuit against interference, transients, and power surges.

The working principle of 1200720869 is based on the fact that light waves can travel through air but electrical signals cannot. This opto-isolator consists of an infrared-sensitive phototransistor which is connected to a 6-pin DIP package. The two ends of the package are connected to a power source. An infrared LED is placed at the opposite side so that the infrared light is directed towards the phototransistor. When a small electrical current is applied to the LED, it emits an infrared light which falls on the phototransistor and activates it. This activates the collector current of the phototransistor, which is then used to control the external circuit.

1200720869 can be used in various applications, such as to protect a circuit from electro-magnetic interference, transients, and power surges. It can be used in data acquisition systems, medical instrumentation, industrial process control, power management systems, and for signal transmission in non-critical applications. These opto-isolators can also be used in audio systems to provide isolation between the input and output signals.

Opto-isolators like 1200720869 are typically used when an electrical signal needs to be isolated from any noise or interference, or when multiple signals must be connected without causing interference between each other. These opto-isolators are also used when controlling a load with an electromechanical feedback loop, as in the case of motor control systems.

In conclusion, 1200720869 is an opto-isolator that is used to electrically isolate two circuits, thus protecting them from external noise and interference. It can be used in various applications, such as data acquisition systems, industrial process control, power management systems, and for signal transmission in non-critical applications. The working principle of this opto-isolator is based on the fact that light waves can travel through air but electrical signals cannot.

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