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Product Details:
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| Torque: | Section 4 ±1.5kg | Rated Power: | DC 30V 0.5A |
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| Contact Resistance: | 25mΩ Max. | Insulation Resistance: | DC 500V 100mΩ Min. |
| Withstand Voltage: | 500V | ||
| High Light: | 15mm Three Pin Potentiometer,Three Pin Potentiometer TQ,TQ Single Alpha B250k Potentiometer |
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Wiring method
For potentiometers (or trimmer resistors, etc.) regular pins (for example, a potentiometer with 3 pins), the resistance value of the two ends is fixed, and the resistance value of the middle pin to either end pin is variable;
It is equivalent to dividing the potentiometer into two series resistors from the middle pin, and the total series resistance value is fixed;
Therefore, if it is used as a variable voltage divider resistor, one end is connected to the input voltage, the middle end is connected to the output, and the remaining end is grounded;
If it is used as a variable resistor, one end is connected to the input voltage, the middle end is connected to the output, and the rest can be left floating or connected to the middle end.
good or bad judgment
The main requirements for the potentiometer are: 1. The resistance value meets the requirements. ②The contact between the center sliding end and the resistor body is good, and the rotation is smooth. For potentiometers with switches, the switch part should be accurate, reliable and flexible. Therefore, the performance of the potentiometer must be checked before use.
(1) Measurement of resistance value: First, according to the resistance value of the potentiometer to be measured, select the appropriate resistance gear of the multimeter, measure the resistance value, that is, the resistance value between the two ends of the AC, and compare it with the nominal resistance value , to see if the two are consistent. Rotate the sliding contact at the same time, its value should be fixed. If the resistance is infinite, the potentiometer is damaged.
(2) Then measure the contact between its center end and the resistor body, that is, the resistance value between the two ends of BC. The method is that the ohm gear of the multimeter is in the appropriate range. During the measurement process, slowly rotate the shaft and pay attention to the reading of the multimeter. Under normal conditions, the reading changes smoothly in one direction. Bad contact failure.
(3) When the center end slides to the first end or the end, the resistance value of the center end and the coincident end is 0 under ideal conditions. In actual measurement, there will be a certain residual value (generally depending on the nominal value, generally less than 5Ω), is a normal phenomenon.
1. who are we?
We are based in Guangdong, China, start from 2013,sell to Domestic Market(55.00%),Eastern Asia(20.00%),North America(10.00%),Southeast Asia(10.00%),Northern Europe(5.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Encoder,Potentiometer/Switch/Encoder
4. why should you buy from us not from other suppliers?
Our R&D team have more than 20 years experience in the component industry.Our customers through all over the world,such as Brother,IKEA,Microsoft,Honeywell etc. The products widely used in aviation model,communication equipment, adjustable lighting.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU,Express Delivery；
Accepted Payment Currency:USD,EUR,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash;
Language Spoken:English,Chinese
Contact Person: Emma
Tel: +8613613717515
