WMR is constructed with a good quality aluminum and zinc based metalized polypropylene foil as medium and electrode,
wrapped and sealed with flame-retardant plastic and epoxy resin. With high reliability, high temperature-resistance, small volume, large capacity and good self-healing property.
A great multipurpose entry-level audiophile capacitor
Virtually free of distortion and delivers a pleasant and rather neutral sonic profile.
Capacitor foil: Polypropylene foil metalized with Zinc (Zn) and Aluminium (Al)
Dielectric insulation: Polypropylene film Terminal leads: Tinned 4N copper wire Voltage rating: 400 VDC / 250 VAC
Working Temperature Range: -40C to + 85C
Capacitance tolerance: +/- 5%
WEE Technology Company Limited - Manufacturer For Full Range of Resistors
Variable Resistors, also called Trimming Potentiometers, WEET is strong at 9mm 6mm Square Trimming Potentiometer,
Square SMD Trimming Potentiometer,Rotary Metal Wire Wound Precision Trimming Potentiometer,Phenolic Consumer Trimming-Potentiometer etc.
WEE Technology potentiometers (WEET trimming potentiometer) include following part number:
WTP-3006, WTP-3266, WTP-3269, WTP-3296, WTP-3323, WTP-3329, WTP-3362, WTP-3386, WTP-3306,
WTP-3309, WTP-3540, WTP-3590, WTP-3318, WTP-065, WTP-3313, WTP-3224 and so on.
https://www.resistorsfactory.com/Variable-Resistors-Potentiometer/
WEE Technology Company Limited - Manufacturer For Full Range of Resistors
A. Debugging method for multi turn precision adjustable potentiometer
1. Correct connection of input signal source
First, connect the signal wire of the input signal source to the middle pin of the potentiometer, and then connect the output end to the load.
2. Resistance adjustment of potentiometer
When debugging a circuit, the resistance of the potentiometer should be adjusted to a smaller value first. Once the resistance value is determined, it can be gradually increased.
3. Offset calibration of potentiometers
When using a potentiometer, there may be unstable situations where the potentiometer drops or rises, and offset calibration is required.
B. Precautions for multi turn precision adjustable potentiometers
1. Multi turn precision adjustable potentiometers should avoid exceeding the rated voltage and current.
When debugging the circuit, attention should be paid to the polarity and wiring of the power supply to avoid short circuits and power damage.
During the debugging process, the sliding trajectory of the potentiometer may cause wear and tear, and attention should be paid to protection.
WEE Technology Company Limited - Manufacturer For Full Range of Resistors
Detailed explanation of the three pin connection method for multi turn precision adjustable potentiometers
1、 Introduction to Multiturn Precision Adjustable Potentiometers
Multi turn precision adjustable potentiometer is a commonly used electronic component used to adjust linear voltage and current in circuits. It has high accuracy, reliability, and is suitable for various circuits, and is widely used in the electronics industry.
2、 The connection method of the three legs of a multiturn precision adjustable potentiometer
The three legs of a multi turn precision adjustable potentiometer are the middle leg, sliding leg, and fixed leg. According to different needs, the middle foot and sliding foot can be connected to the circuit separately, and the fixed foot is usually used for power or ground.
A. Single circle connection method
The single loop connection method is to connect the sliding foot and the middle foot together, and fix the foot to ground or power. This connection method is suitable for single voltage circuits, such as audio amplifiers, power amplifiers, etc.
B. Double circle connection method
The double loop connection method is to divide an adjustable potentiometer into two parts, connect the two fixed pins together, and at the same time connect the middle pin and the two sliding pins to two separate circuits. This connection method is suitable for circuits that require two different voltages or currents, such as power amplifier front-end circuits.
C. Three circle connection method
The three circle connection method is to divide an adjustable potentiometer into three parts, connect two sliding pins and one fixed pin into one circuit, and at the same time connect the middle pin and the other fixed pin to another circuit. This connection method is suitable for situations that require two different voltages or currents, such as audio frequency EQ circuits.
WEE Technology Company Limited - Manufacturer For Full Range of Resistors
Precautions for using WEET potentiometers:
(1) In order to prevent the pin contacts and conductive layer of the WEET potentiometer from deteriorating or burning out, the working current of the potentiometer should not exceed the rated current.
To avoid potential damage to the potentiometer.
(2) If the WEET potentiometer is used for a long time, there may be some loud noise or inflexible shaft adjustment.
In this case, there may be a lack of specialized lubricating oil inside the potentiometer.
By adding appropriate lubricating oil, the two types of faults can be solved.
(3) Do not tap or shake the WEET potentiometer during installation. Because the interior of the potentiometer is composed of various components,
it is possible that these components may fall off due to violent shaking or vibration. So, more precautions are needed for this.
https://www.resistorsfactory.com/Datasheet/WEET-WTP-3386-0.5W-9mm-Square-Trimming-Potentiometer.pdf
WEE Technology Company Limited - Manufacturer For Full Range of Resistors
Suggestion for storing WEET potentiometers:
(1) Avoid storing WEET potentiometers and items with chemical components to prevent them from corroding the internal components of the potentiometer.
So it should be isolated and stored from items containing these chemical components.
(2) WEET potentiometers should be stored in high temperature environments, as storing them in high temperature areas may cause accidents such as spontaneous combustion of internal components.
So it should be stored and not placed in a high temperature place.
(3) WEET potentiometers should not be stored in damp places, as storing them in damp places can easily cause the internal components of the potentiometer to become damp and fail.
So the WEET potentiometer should be stored in a ventilated place.
WEE Technology Company Limited - Manufacturer For Full Range of Resistors
Trouble shooting of Timming potentiometer soldering
The soldering of potentiometers is one of the reasons that can easily cause malfunctions, and most customers still use manual soldering.
In addition, some large enterprises use high-frequency soldering methods.
There are some things to pay attention to. When using manual soldering method, the potentiometer should be completed as quickly as possible during the soldering operation, preferably within 3 seconds.
The highest temperature of the soldering iron contact should be below 270 degrees.
If the time is too long or the temperature is too high, it can cause various reasons such as poor contact of the potentiometer.
When welding, be cautious when using flux and avoid using water-soluble flux, otherwise it will promote metal oxidation and material mold.
When using high-frequency soldering, pay attention to the plastic parts inside the potentiometer, such as the dial knob, plastic push handle, plastic handle, etc.,
so that the melting point can reach the required temperature for high-frequency soldering. If not, please replace the high-temperature resistant parts.
https://www.resistorsfactory.com/Datasheet/WEET-WTP-3362-0.25W-6mm-Square-Trimming-Potentiometer.pdf
WEE Technology Company Limited - Manufacturer For Full Range of Resistors
| Standard Resistance Range | 10Ω - 5MΩ |
| Resistance Tolerance | ±10% (100Ω~1M), ±20% (R<100Ω, >1M) |
| Terminal Resistance | ≤±1%R or 2Ω (whichever is greater) |
| Contact Resistance Variation | (CRV) ≤±1%R or 3Ω, (whichever is greater) |
| Insulation Resistance | ≥1GΩ (100V AC) |
| Withstand Voltage | 640V AC |
| Adjustment Angle | 240° |
WEE Technology Company Limited - Manufacturer For Full Range of Resistors
The working principle of the 3296 potentiometer is based on its internal structure and electrical characteristics.
It is a variable resistor, usually composed of a resistor body and a movable brush. The resistor body has two fixed ends, and the position of the moving contact point on the resistor body can be changed by manually adjusting the shaft or sliding handle. In this way, the resistance value between the moving contact and any fixed end will change, thereby adjusting the voltage and current in the circuit. twelve The 3296 potentiometer is a pre adjusted potentiometer driven by a screw, with the characteristic of multiple rotations. The full stroke is greater than or equal to 15 rotations, and the maximum resistance of the resistor body is only 300 °.
By rotating the screw, the position of the contact point on the resistor can be adjusted, thereby changing the resistance value of the potentiometer. After adjusting to the maximum or minimum resistance value, the contact will not move with further rotation of the screw, which provides protection.
Potentiometers have a wide range of applications, as they can be used to adjust voltage (including DC voltage and signal voltage) and current, and are also commonly used as voltage dividers. In electronic circuits, the 3296 potentiometer is particularly suitable for situations that require high precision, such as audio amplifiers, temperature controllers, light brightness regulators, etc
https://www.resistorsfactory.com/Datasheet/WEET-WTP-3329-0.5W-6mm-Round-Trimming-Potentiometer.pdf
WEE Technology Company Limited - Manufacturer For Full Range of Resistors
How to distinguish the three pins of a potentiometer
The three pins of a potentiometer typically include the middle pin (wiper), top pin (top), and bottom pin (bottom).
The middle foot serves as a voltage divider, while the top and bottom feet define the resistance range that changes when the knob is turned. The method to distinguish the three pins of a potentiometer is as follows: 12 Observe the appearance. The appearance of a potentiometer usually has a mark indicating the position of the middle pin, and the positions of the left and right pins can also be distinguished by size and shape. Generally, the left pin is slightly larger than the right pin and is further away from the middle pin.
Use a multimeter for testing. Using a multimeter can further confirm the function of the pins. Firstly, connect the multimeter probes to any two pins of the potentiometer, adjust the potentiometer handle, and observe whether the resistance changes; Then, replace one of the probes with the connected pin, adjust the potentiometer handle again, and observe whether the resistance value changes. Comparing the resistance values of two measurements, when the resistance value in one measurement does not change, it indicates that the pin connected to the red and black probes of the multimeter is a fixed pin, and the other pin is a moving pin. Through these methods, the three pins of the potentiometer can be effectively distinguished.
https://www.resistorsfactory.com/Datasheet/WEET-WTP-3323-0.25W-6mm-Square-Trimming-Potentiometer.pdf
