EL3042S(TB)-V

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Optoisolators with Triac, SCR Output are electrical devices used to isolate two separate circuits electrically and optically. They are widely used in signal isolation and switch control, such as AC power, logic signal switch, etc. EL3042S(TB)-V is a typical Triac, SCR Output optoisolator that provides excellent electrical isolation between its control and output circuits.

The EL3042S(TB)-V is designed to isolate the switching of an AC power circuit from the control logic that switches on and off the power. It includes an LED optically coupled to a phototriac on a single monolithic chip. An LED driver connected to transistors is used to drive the LED. The LED emits infrared (IR) radiation which is then translated into a small AC current by the phototriac. This current is used to directly switch the AC power circuit on and off.

The EL3042S(TB)-V chip contains a optically triggered silicon bilateral switch designed for 12V and 250VAC/VPD isolation between input and output for high-voltage applications. It can be used to switch resistive and inductive loads. The switching shuts off the AC line in response to the logic level control voltage. In order to switch on, the input logic voltage must reach the minimum trigger level, which is typically about 1.2V (dc).

The advantage of using the EL3042S(TB)-V optoisolator for AC line applications is that the AC line voltage is isolated from the logic control voltage; thus, the safety concern is eliminated. The optoisolator consists of an LED, a photocoupler and a switch integrated on the same monolithic chip. The chip also includes a Zener diode to protect against high-energy transients and a diode for back-voltage protection.

The EL3042S(TB)-V can be used in many AC switching applications because of its excellent isolation and fast switching speed. It is used in switch mode power supplies, motor control systems, home automation systems, industrial control systems, UPS systems, security systems, and gaming systems. In addition, the optoisolator is also used in AC line isolation, voltage-sensing switch, time-delay switching, digital logic interface and remote control applications.

The EL3042S(TB)-V offer a wide range of application due to its excellent isolation characteristics and fast switching speed. It is an ideal optoisolator for efficiently switching on and off AC lines. With its integrated LED, photocoupler and switch, the EL3042S(TB)-V ensures superior protection from high-energy transients and back-voltage. It is the perfect optoisolator for a variety of AC switching applications.

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