Wirewound potentiometer, with high precision, good stability, small temperature coefficient, reliable contact and other advantages, and high temperature resistance, strong power load capacity. The disadvantage is that the range of resistance is not wide enough, the high frequency performance is poor, resolution is not high, and the wire wound potentiometer with high resistance is easy to break, the volume is larger, and the price is higher. This potentiometer is widely used in electronic instruments and meters. The resistance body that wire winds potentiometer is formed by resistance wire winding on insulation, the kind of resistance wire is very much, the material of resistance wire is the space that holds resistance wire according to the structure of potentiometer, resistance value and temperature coefficient will choose. The thinner the resistance wire, the greater the resistance value and resolution in a given space. But the resistance wire is too thin, easy to be disconnected in the process of use, affecting the life of the sensor. Synthetic carbon film potentiometer has the characteristics of wide resistance range, good resolution, simple process and low price, but it has large dynamic noise and poor moisture resistance.
WTH118 47K Pot Kit
WTH118 33K 4 PIN
WTH118 22K Ohm
WTH118 15K 1A Potenciometro
WTH118 10K Rotary
Among them, rated power, nominal resistance, allowable error, resistance change law, temperature coefficient are five more important parameters are also the primary consideration when choosing potentiometer 1. Rated power The rated power of the potentiometer is the maximum power consumption allowed by long-term continuous load under the specified rated temperature, which is the maximum power consumption allowed by the total resistance of the potentiometer. When selecting the potentiometer, if the current limiting effect is used, it is necessary to pay attention to the rated power of the potentiometer if it exceeds the power of the actual application; 2. Nominal resistance Nominal resistance is a more important parameter of potentiometer, general potentiometer will indicate how much resistance value on the surface, this is the nominal resistance of potentiometer; 3. Allow error Allow error is to consider potentiometer resistance value size allows up and down resistance value difference, not the error is smaller, want you to need according to actual circuit, the circuit with strict requirements to the circuit needs to use precision potentiometer, potentiometer error level generally 20%, 10%, 5%, for precision potentiometer error is smaller; 4. Resistance change rule The law of resistance change is to refer to what kind of change law the resistance follows when the potentiometer rotates. Many potentiometers show linear specifications, exponential laws, or other one-time function relations; 5. Temperature coefficient Potentiometer also is component, can have established working temperature limits, such ability assures circuit reliability.
potentiometer
B100K 6-PIN 104
B500K 6-PIN 504
B1K 5-PIN 102
B5K 5-PIN 502
B10K 5-PIN 103
B20K 5-PIN 203 Ohm
