EL4503S1(TA)-V

Optoisolators - Transistor, Photovoltaic Output

The EL4503S1(TA)-V is an optoisolator that provides an electrical isolation between the input and output of an electronic circuit. The EL4503S1(TA)-V is specifically designed as an optically coupled transistor output for high voltage and currents. It features a very low forward voltage of as little as 0.1V and can provide currents up to 200mA.

Application Field

The EL4503S1 (TA)-V is often used as an isolation component in a variety of applications, such as:

• Power supply control circuits and switching regulators
• Medical, industrial and automotive applications
• Switched mode power supplies
• Robotics and motor control circuitry

Working Principle

The EL4503S1 (TA)-V consists of an infrared LED, an optically coupled transistor, and a Collector to Emitter photo-coupler. The LED emits light into the photo-coupler when current flows through the diode. This light causes the collector current of the optically coupled transistor to flow, thus turning it on. This, in turn, causes the voltage at the collector node to increase, which creates a current in the connected circuit.

In addition to the LED/transistor pair, the EL4503S1 (TA)-V also has a zener diode. This diode limits the amount of current that flows through the optocoupler and helps protect the transistor from overvoltage. The EL4503S1 (TA)-V also has an adjustable resistor that is used to adjust the current limits of the optoisolator.

The EL4503S1 (TA)-V has a wide range of applications due to its low switching voltage and current. It can be used to control high voltage and high current applications, and is often used in applications where electrical isolation is desired. For example, the EL4503S1 (TA)-V is used to isolate the signal from one circuit to another, or can be used to provide electrical isolation between a circuit and a power supply.

Conclusion

The EL4503S1(TA)-V is an optically coupled transistor output designed for high voltage and current applications. It has a very low forward voltage of as little as 0.1V and can provide currents up to 200mA. It is often used as an isolation component in a variety of applications such as power supplies, medical and automotive applications, and motors. The EL4503S1(TA)-V also has a zener diode to limit the amount of current that flows through the optocoupler and has an adjustable resistor to adjust the current limits.