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About product and suppliers:
        Alibaba.com offers 1,793 constant current source products. About 13% of these are switching power supply, 1% are integrated circuits, and 1% are other electronic components. 

A wide variety of constant current source options are available to you, such as single, dual, and dc. You can also choose from 201 - 300w, 1 - 50w, and >500w. As well as from 220v, 110v, and 380v. And whether constant current source is free samples, or paid samples. 

There are 1,801 constant current source suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 99%, 1%, and 1% of constant current source respectively. 

Constant current source products are most popular in North America, Western Europe, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 292 with ISO9001, 128 with Other, and 51 with ISO14001 certification.