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The response speed of the optocoupler is extremely fast, and its response delay time is US level, and the faster one is NS level.

Optocoupler is an electrical component used for photoelectric conversion, which is widely used in various circuits, so how long can optocoupler las...

In 1885, C. Bradley of England invented the molded carbon solid core resistor. In 1897, T. Gambrill and A. Harris in England made carbon film resis...

Low-power resistors are usually made of a carbon film encapsulated in a plastic housing, while high-power resistors are usually wirewound resistors...

The main work of optocoupler in the circuit is to isolate and convert photoelectricity, and there are many applications, so optocouplers also have ...

Optocoupler is a kind of optoelectronic device, relay is an electrical control device, generally speaking, optocoupler can directly control the rel...

Infrared light is invisible and imperceptible to the human eye. The appearance of the common infrared LED lamp beads is similar to that of ordinary...

1. Visual inspection For fixed resistors, first check that the mark is clear, the protective paint is intact, no scorching, no scars, no cracks, no...

The resistor should be checked before use, and the performance of the resistor should be checked to see if the actual resistance value is consisten...

1. Fuse resistor: also known as fuse resistor, plays the dual role of resistance and fuse under normal circumstances, when the circuit fails and it...

When designing optocoupler circuits, the model and parameters of optocouplers must be correctly selected, and the general selection principles are ...

1. The response speed is fast, and the time constant is usually measured in milliseconds or microseconds. 2. The input and output terminals are ins...