H11C13SD

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Optoisolators are electrical devices that provide a way to control a high-voltage system using a low-voltage source without the two sources being electrically connected. The most common type of optoisolator consists of an infrared light-emitting diode (LED) and a phototransistor or photodiode mounted in a plastic housing. When voltage is applied to the LED, the light is directed onto the phototransistor or photodiode, which switches the voltage on or off to the other side of the circuit. Optoisolators are commonly used to apply a voltage to a system that is electrically isolated or to control a circuit that is powered at a much higher voltage than that of the control circuit. Triac, SCR output optoisolators are a type of optoisolator that provides power to the system using a triac or scr (silicon controlled rectifier) output.

The H11C13SD optoisolator is a popular choice for applications that require high-current electrical isolation. This device features an ultrabright LED and a phototransistor output in a 6-pin dual in-line package or surface mount package. The LED emitter is protected from accidental overvoltages up to 125V rms/277V peak, and it can be operated with a wide range of AC or DC input signals. The output transistor is configured to respond only to incoming signals from the LED, providing a high degree of electrical isolation between the input and output circuits. The PNP phototransistor output of the device provides bidirection current conduction capabilities and is capable of switching up to 0.5 Amps DC or 0.25A per phase AC. The reverse blocking voltage of the phototransistor is rated at 40V, which makes it suitable for applications where high current but low voltage is needed.

The operating principle of a typical H11C13SD optoisolator is as follows. When voltage is applied to the LED, light is emitted, which is then detected by the phototransistor. The current then flows through the transistor, which activates the triac or scr on the output side to supply the voltage to the system. This is known as “light-on” activation. The circuit will remain in the activated state until the voltage is removed from the LED, which causes the light to stop emitting and the phototransistor to switch off. This is known as “light-off” activation.

H11C13SD optoisolators are commonly used to control a wide variety of electrical devices or systems including solenoids, motor control, and heater control. They are also often used in audio and video applications, where they can be used to protect a system from electrical noise or sudden voltage spikes. The H11C13SD optoisolator is a reliable and versatile device that provides a high degree of electrical isolation in a wide range of applications.

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