One, principle
The metal resistance value of the access circuit is used to achieve control. Essence
Sliding is to change the length of the circuit’s metal wire, so the wire -length short wire length and short sliding slide can change the electricity. Essence Essence
Its resistance wire, its horizontal, horizontal, horizontal, still area, and also, and back, there is also a relationship. Essence Essence Essence Essence The more and more the resistance coefficient of this species. Essence
Precautions
:: The maximum resistance resistor and allowed to be allowed to allow large current current current current current current current current current current current current current current current. : Whether it is the most: whether it is: whether it is: whether or not, whether or not, whether or not, whether Lianrenren circuit circuit at both ends, "once" means that the circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit circuit varies varies. Great "near". The sliding sliced ??sliding slices of sliding and sliding transformer resistors are close to nearby "small" in the process of mobile movement. Under the wiring column down the wiring column
The role
(1) (1) The role of the protection of the protection, the role of protection, protection, that is, the electrical bond, the electrode, the electrical key is closed, the closed should be closed, and the sliding slide sheet slide sheet Person P Sheet P should be adjusted. , Make a guide conductor of the current current current current current current (((((((((((((((((((((((((((((((((((((((((((() The voltage voltage of the end.. Change changes and varies, one by one, one by one, one by one.
Third, inspection
Use the contact of sliding alloy to ensure the area area. Oxidation and oxidation
Use the front metal rod to rust and, such as wear, not wear, no, not
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