EL3012-V

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Optoisolators are one of the LED technology-based circuits used to isolate an electrical system from other circuit stages. They are used to provide electrical isolation in circuits that require protection from ground faults or sensitive applications such as medical equipment and factory automation. The EL3012-V is a unique optoisolator circuit that features both Triac and SCR output variants to enable the user to select the exact level of optical isolation required for the application. This application note provides an overview of the EL3012-V application field, as well as a description of the EL3012-V working principle.

EL3012-V Application Field

The EL3012-V is a versatile optoisolated voltage or current isolated electronic switch circuit that can be used in a variety of applications. Its small size and low power consumption make it particularly suitable for use in mobile applications such as portable medical devices, portable data acquisition systems, and portable factory automation systems. The EL3012-V is capable of driving both Triac and SCR outputs, which makes it suitable for use as a voltage switch as well as for controlling motors and other electrical loads. It is also capable of controlling the AC/DC voltage conversion requirement of low voltage direct current signals. In addition, the EL3012-V can be used to provide an isolated AC/DC input in a variety of applications such as controlling DC motors.

EL3012-V Working Principle

The EL3012-V is an isolation-controlled opto-electronic switch circuit based on LED technology. The circuit works by using the light emitted by the LED to activate a photocell. The photocell then acts as a switch, switching the electrical signals that pass through it. The EL3012-V is a dual-output optoisolator configured in a darlington configuration for increased current output. To make the EL3012-V work, a minimum current must be supplied to the LED to activate the photocell. This minimum current is known as the trigger current, and it is important to ensure that the trigger current is kept constant to ensure reliable operation of the circuit. Once the trigger current is applied, the photocell will switch the circuit on, allowing the signal to pass through.

The opto-electronic switch is very precise, ensuring that no stray signals can be passed through the circuit. This makes it an ideal solution for applications that require high levels of electrical isolation. The EL3012-V also features a voltage-controlled output, providing the user with the option of regulating the electrical signals passing through the circuit. This is particularly useful for applications that require consistent control of the electrical signals. The EL3012-V also features a suppressor diode to protect against any electrical back-emf and can handle voltages up to 600V RMS.

The EL3012-V is an ideal opto-electronic switch for applications that require high levels of electrical isolation and reliable operation. Its small size, low power consumption, and wide output range make it suitable for a variety of applications, such as applications that require precise control of electrical signals. In addition, the EL3012-V\'s ability to provide both Triac and SCR outputs makes it a versatile solution for controlling a variety of loads. With its wide range of features and benefits, the EL3012-V is an excellent choice for both power and low voltage applications.

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