4N393S

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Optoisolators are electronic components that allow electrical signals to be isolated from one side of an electrical circuit to the other side. They are commonly implemented using semiconductor technology and are used to protect electronic circuits from voltage spikes or transients caused by electrical noise on the lines. They are also used to provide electrical isolation between two connected devices to improve the overall system performance and reliability. The 4N393S is an optoisolator that offers triac and SCR outputs.

The 4N393S optoisolator consists of a light emitting diode (LED) and a phototransistor. The LED is activated by applying an input voltage across it. This incoming voltage passes through the LED and when the current reaches the LED’s threshold (forward) voltage, the LED emits light. The light is then detected by a photo-sensitive transistor (an SCR or a triac) which is placed in close proximity to the LED.

When the phototransistor detects light, it switches on and the output voltage is applied across the load. This output voltage is regulated based on the current passing through the LED. The voltage applied to the LED is typically higher than the output voltage. The 4N393S optoisolator has a wide operating temperature range, making it suitable for a variety of applications.

The primary purpose of the 4N393S optoisolator is to provide electrical isolation between two circuits. This helps to eliminate electrical noise that could damage the connected devices. The 4N393S is also used for controlling the on/off switching of electrical loads such as motors and lighting fixtures. It can be used as a controller for low voltage (24v) applications such as switch/dimmer controls.

The 4N393S optoisolator can also be used for sensing applications. It can be used to detect the presence of a voltage or current without having to make a direct connection between the two circuits. This can be used for safety applications, such as door and window sensors. The device is also suitable for interfacing between main power lines and low voltage systems.

The 4N393S optoisolator is a versatile device that provides a number of features and advantages in electrical applications. It provides isolation between two circuits, allowing the connected devices to operate reliably without interference from external electrical noise. The device also offers a wide operating temperature range, making it suitable for a variety of applications. The 4N393S optoisolator can be used for controlling electrical loads, sensing applications, and as an interface between main power lines and low voltage systems.

The specific data is subject to PDF, and the above content is for reference