For wire wound potentiometer, in addition to the above moving contact and winding between the contact noise, there are resolution noise and short noise. Resolution noise is caused by the step of resistance change, while short circuit noise is generated when the moving contact moves on the winding and shorts adjacent wire turns. It is proportional to the current flowing through the winding, the resistance of the wire turns, and the contact resistance between the moving contact and the winding. Potentiometer mechanical life is also called wear life, commonly used mechanical durability. Mechanical durability is to point to potentiometer in the specified test conditions, the total number of reliable movement of moving contact, commonly used "week" expressed. The kind of mechanical life and potentiometer, structure, material and make craft are concerned, difference is quite big. In addition to the characteristic parameters mentioned above, potentiometer has rated power, tolerance tolerance of resistance, maximum working voltage, rated working voltage, insulation voltage, temperature parameters, noise electromotive force and high frequency characteristics of parameters, the significance of these parameters and the significance of the corresponding characteristic parameters of the resistor.
2.2M Ohm
WTH118 2M2 Linear Taper
WTH118 1M 4 PIN
WTH118 680K 1A
WTH118 560K Variable Resistor
WTH118 470K Rotary
The action of potentiometer and wiring mode, potentiometer application occasion, choose principle. One, potentiometer introduction Potentiometer is a kind of component, in the circuit application is very extensive, can be used alone in the circuit, also can be used together with other electronic components and constitute the electronic circuit that has all sorts of functions. The circuit symbol of potentiometer is "RP", potentiometer has a lot of actually, for instance electromagnetism furnace potentiometer, adjustable potentiometer, carbon film potentiometer, vertical potentiometer, single couplet/double couplet potentiometer, single ring/much ring potentiometer, patch potentiometer, sealed type potentiometer, precision potentiometer. 1, potentiometer structure composition Take the rotary potentiometer as an example to illustrate the internal structure of the potentiometer, as shown in the figure below, the potentiometer structure consists of resistance body, sliding arm, sliding end, shaft, handle, welding plate and so on. A, B and C are three welds, among which the resistance value between A and C is the total resistance value of the potentiometer.
potentiometer
B1K 3-PIN 102
B5K 3-PIN 502
B10K 3-PIN 103
B20K 3-PIN 203
B50K 3-PIN 503
B100K 3-PIN 104 Ohm
