commercial level encoder VS chip level encoder！

Encoder based on use case, can be roughly divided into commercial level, chip level, economic level, standard industrial level and all kinds of special industrial use level.

As for commercial level product, the Internal encoder of the printers and magnetic card machines structure is simple and most of them without package, let alone the temperature, dustproof, waterproof, and EMC. Both of the commercial and chip level encoder the price is very cheap. At present some foreign countries semiconductor chip manufacturers provide the chip level encoder or backward  factories provide simple or no package, with easy power supply and signal process which is suitable for the development of secondary circuit and receiving circuit distance from the encoder should not be more than 50 cm. if you don't understand, more easily damaged.

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