BRT12-F

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Optoisolators are special electronic components used to provide electrical isolation between two circuits while transferring signals from one circuit to the other. The BRT12-F is a member of the optoisolator family that is designed for applications requiring an SCR or triac triggered output. This article will discuss the field of application for the BRT12-F and the basic principles governing its working.

Applications for the BRT12-F typically require a controlled, isolated switching action between two electrical circuits. It may be used in applications such as load switching, zero crossing detection, dimming control, logic systems and many more. It is designed to be used in a variety of AC and DC line voltages depending on the needs of the application.

The BRT12-F opto-isolator has three main components: a light source, an optical isolator and a solid state switch. The light source is typically an LED but may also be a light emitting diode. This source emits the light necessary for operation of the opto-isolator. The optical isolator is a layer of glass or plastic which acts as a barrier between the two circuits, preventing electrical contact between them. Finally, the solid state switches use the light from the LED to open or close the circuit, allowing or preventing electrical current flow.

When the BRT12-F is in use, the LED is energized by the circuit connected to the anode of the unit. This causes light to be emitted from the LED, which is then transmitted through the isolator to the cathode of the unit. This illuminated photocell contains a switch which is operated by the light and thus allows current to pass. As the current passes though, it activates the solid state switches, that open or close the circuit, according to the specified output voltage from the BRT12-F.

For applications requiring a triac-based output, the BRT12-F can be configured to provide an output voltage of between 0 and 10V. It also features a ground switching delay which allows it to operate with zero crossing detection, allowing for precise control over the output voltage. The output voltage is determined by the amount of current flowing through the photocell

For applications requiring an SCR-based output, the BRT12-F can be configured to provide either a voltage of between 0 and 6V or a voltage of between 6V and 8V. It also has the same ground switching delay and zero crossing feature as with the triac-based configuration. The same principles apply to the SCR-based configuration, with the output voltage determined by the amount of current flowing through the photocell.

In conclusion, the BRT12-F is an opto-isolator designed for applications requiring an SCR or triac triggered output. It consists of a light source, an optical isolator and a solid state switch that is operated by the light from the LED. The output voltage is determined by the amount of current passing through the photocell and can be configured for either SCR or triac-based operation.

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