H11G1M

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Optoisolators are devices used to provide galvanic isolation between two circuits, usually electrical and optical. They make use of a light emitting diode and a detector in a single package to isolate a control signal or data transmission path from its associated power or signal paths. H11G1M is a type of optoisolator with a transistor photovoltaic output. This article will discuss the application fields and working principles of this optoisolator.

H11G1M optoisolators are typically used to isolate signals between two systems with different ground references and electrical noise sources. This type of optoisolator has two groups of terminals: a LED input and an output side, with either an open collector type output or a photovoltaic type output. The optoisolator is powered with a supply voltage of up to 28V, and the LED emits light which is detected by the photo detector. The resulting output is either an open collector or photovoltaic type signal.

The most common application field of H11G1M optoisolators is in industrial automation, where these devices are used to isolate control signals from one system to another. Examples of such applications are signal relay circuits for controlling motors and industrial controllers, as well as data transmission paths for sending signal between various systems. Another common application of this type of optoisolator is in automotive systems, where optical isolation of signals between two different systems is often needed.

The working principle of the H11G1M optoisolator is relatively simple. When the input side (LED) is powered, it emits light which is then detected by the photo detector. Depending on the type of output chosen, the signal is then either amplified through an open collector transistor or converted into a current by the photovoltaic output. Either way, the output side is electrically isolated from the input side which ensures electrical isolation and noise suppression.

To conclude, H11G1M optoisolators are an effective way to provide electrical isolation between two different systems. These devices are commonly used in industrial automation and automotive systems, and they work by converting a light signal into either an amplified voltage or a current signal. By using an optoisolator, dangerous voltage spikes and electrical noise can be effectively blocked, thus providing a safe and reliable transmission path.

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