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12V supply for He-Ne laser(TIP140)

2016-11-06 22:32  
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This article describes a 12V supply for He-Ne laser (TIP140). The content is very simple, very practical. The components of the article can help you understand better grasp this principle. For example, in this part of the principle, you can go to find and purchase the components: TIP140. 

r93 12V supply for He Ne laser