Hits:Updated:2016-08-04 17:08:09【Print】
| What are the factors we use adjustable potentiometer knob when it is easy to overlook. Friends of Xingda potentiometer potentiometer factory production of the majority of users, the company's products are divided into four series, 500 variety specification. Such as: knob potentiometers, precision potentiometers, dials and potentiometer adjustable resistance. The following small series specifically explain the use of adjustable potentiometer knob, when we compare what factors are easy to overlook. A factor, potentiometer knob surface should prevent condensation or water droplets exist, avoid damp places to prevent the deterioration of the insulation or cause a short circuit; Factors Second, put the potentiometer knob in the process, the use of force is not too large (parameter index can not exceed the "specifications" of the central axis of the push-pull), otherwise it will cause damage to the potentiometer; Three factors, shaft or slip handle knob potentiometer can be used as much as possible should be designed as short as possible. Shaft or slip handle length shorter feel better and stable. Conversely the greater the longer the shaking, feel easy to change; Four factors, welding, rosin (flux) into the appropriate height adjustment of the press plate, flux should avoid invasive internal potentiometer, otherwise it will cause poor contact brush and resistor generates INT, noise undesirable phenomena; Factor V, potentiometer knob rotation operation force (rotating or sliding) with temperature rises lighter, with decreasing temperature and tighten. If the potentiometer is used in low-temperature environment for an explanation for the use of special low temperature grease; Factors six potentiometer knob to adjust the voltage applied to the best structure and wiring should choose "1" feet grounded; avoid using the current adjustment structure, since the contact resistance between the resistance and the contact piece is not conducive to large current through; Factor VII, the terminal knob of the potentiometer in welding should avoid the use of capacitive water flux, otherwise it will contribute to a metal oxide material with mildew; avoid the use of poor quality solder, poor solder may cause difficulties on the tin, resulting in poor contact or disconnection; Factor VIII, install the "rotating" potentiometer at a fixed nut, strength should not be too tight, or turn to avoid breaking Neck and poor; installation "steel sliding straight" when potentiometer, avoid using long screws, otherwise may impede movement slip handle, or even directly damage the potentiometer itself; Factor IX knob of the potentiometer resistor mostly synthetic resin made more carbonated, should avoid contact with the following items: ammonia, other amines, aqueous alkali solution, aromatic hydrocarbons, ketones, lipids carbon hydrogen compounds, strong chemicals (high pH) and so on, otherwise it will affect its performance; Factor X. terminal knob of the potentiometer during welding if the welding temperature is too high or too long may cause damage to the potentiometer. Pin terminals should be soldered at 235 ℃ ± 5 ℃, within 3 seconds to complete, the welding should ionization potential than 1.5MM body, do not use the solder flow through the circuit board welding; welded wire terminals should be at 350 ℃ ± 10 ℃, completed within three seconds. And the terminal to avoid stress, otherwise easily lead to poor contact. From the foregoing, we use adjustable knob potentiometer should have a more profound understanding. Friends of Xingda for the sake of improving competitiveness, we have been using the latest electric production technology, with strict quality control. We produce a variety of parts, and nearly 350 samples of 20 types of potentiometers, to provide customers with the highest quality products and services. |
