中国黄色网址大全-中国黄色免费-中国黄色免费网站-中国黄色录像-国久久-国模超大尺度私拍

　　The so-called adjustable potentiometer is a way to change the size of the resistance of the varistor by an external force. How much change in resistance, the resistance change speed, change the resistance level of accuracy, the total number of ohm resistance, these parameters are adjustable potentiometer depends on the level of product level. Currently independent production of adjustable potentiometer our country can be said to achieve a sea change.
　　Why is has undergone enormous change? Potentiometer this product is actually very simple, few people can produce, can produce 200, but this product should potentiometer no problem, quality has been stable so we should look at is not the product potentiometer manufacturers have the ability to introduce new and improve the management process. Potentiometer to the current development of our country is a certain level of improvement. From the analysis of the potential of the structure; potentiometer is a key component of the axis, bushings, housing, movable piece, brushes, carbon sheet, pin.
　　Axis, bushings, housing, terminals are metal stamping materials, movable piece is plastic, it is not necessary to worry about this, there is no problem in our country, Japan and Germany are currently better than this. The key component is a carbon sheet and brush, brush material level of use and carbon printing sheet is in place, the relationship between the potential level if the high end.
Potentiometer brush currently used materials are phosphor bronze, beryllium copper, copper. High-end general use of beryllium copper. There are more high-end alloy wire brush is to use, the price is very expensive alloy wire. Carbon sheet portion becomes relatively more important, because the quality of the diameter of a carbon sheet surface of the carbon layer and a silver layer printed material and affect the quality level of the potentiometer. Of course, and production control and production environment has a certain influence. The key is to have a direct impact on the level of material and printing technology. Above the current market requirements for many users is the resistance symmetry.
　　Guangdong Granville Electronics Co., Ltd. since 1991 began the development of the production of adjustable potentiometer, with many years of experience in the industry development, and manufacturing customers.