PS2911-1-F3-K-AX

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Optoisolators - Transistor, Photovoltaic Output

Optoisolators – Transistor, Photovoltaic Output are integrated circuits (ICs) that employ optical technology to isolate a low voltage input from a higher voltage output. This type of optoisolator utilizes a Light Emitting Diode (LED) to transmit energy which then activates a photovoltaic switch, usually a transistor. By using a transistor as a switch, these optoisolators can switch low levels of current and operate in a digital logic system.

Application Field

The primary application field for optoisolators – Transistor, Photovoltaic Output is in industrial and commercial applications. These optoisolators are often used in automated control systems as they are reliable and require no external power source for operation. Optoisolators are also used in industrial safety circuits, PLC systems, waterproof logic circuit protection, and high temperature systems as they are often used in hostile environmental conditions or power surges. The use of optoisolators also provides excellent protection against voltage transients, surges, and signals of different voltage or frequency levels.

Working Principle

The working principle of optoisolators – Transistor, Photovoltaic Output is simple. This type of optoisolator utilizes a Light Emitting Diode (LED) to transmit energy which then activates a photovoltaic switch, usually a transistor. A current is applied to the LED which emits light in the visible spectrum. When the light is received by the photovoltaic switch, usually a transistor, it is converted to an electrical signal which then controls the switch.

The electrical input that is applied to the LED must be within the current range of the optoisolator and must be of a suitable voltage. The voltage applied should not exceed the maximum allowed for the optoisolator. If too much voltage is applied, the LED can become over-heated and burn out. Generally, the electronic devices powered by the optoisolator should have the same voltage as the optoisolator itself, otherwise the voltage differences can cause short circuits or sparks.

When activated, the LED emits light that is sensed by the photovoltaic switch. The switch then turns on the corresponding electronic devices. When the current is turned off, the LED stops emitting light and the switch turns off the electronic devices.

Optoisolators – Transistor, Photovoltaic Output provide a significant benefit in industrial and commercial applications as they provide accurate timing, power supply separation, protection from over-voltage, noise, and other sources of electrical interference. Optoisolators can be used in hazardous environments where digital logic control needs to be reliable and efficient.

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