The 250K Audio Taper Potentiometer is composed of shell, sliding shaft, resistor and three lead-out terminals. There are many kinds of potentiometers, which can be divided into 250K Audio Taper Potentiometer (or rotary handle potentiometer) and direct sliding potentiometer according to the dispatching method.            

According to the number of links, it can be divided into single-connected potentiometer and multi-connected potentiometer. There are also two kinds of potentiometers, switchless and switchless. We generally call them 250K Audio Taper potentiometers.

Defects and Repair Method of 250K Audio Cone Potentiometer

1. If the difference between the measured resistance and the nominal resistance of the potentiometer is large when the potentiometer is used to detect the fixed pin ends, it may be that the pin ends of the potentiometer have some shortcomings such as short circuit. So in dealing with this shortcoming, the editor suggests that we should still choose the replacement potentiometer in general. Generally, it is not convenient to repair, because the pin internal short circuit and other shortcomings are due to some internal components have been damaged, even if repaired, in operation, the resistor will be severely burnt open due to overcurrent.

2. The disadvantage of common potentiometers is that the announcement of large rolling noise is made at the time of dispatching. The main reason is that the wear of the resistor leads to bad contact between the mover contacts and the resistor, and then causes the resistance value to rise or fall, which makes up the noise when dispatching. As for the method of dealing with the noise defect of potentiometer, the first thing is to take the potentiometer apart and then add some industrial lubricant on the rotating axle of the potentiometer. Its purpose is to reduce the resistance when dispatching the rolling axle, then to reduce the wear of the resistor together, and then to eliminate the noise defect in the application of the potentiometer.            

Cautions for 250K Audio Cone Potentiometer Switching Potentiometer            

1. Before the potentiometer is used, it must be carefully checked whether the potentiometer is good or bad, such as whether the lead-out terminals between the pins of the potentiometer are loose or not, and whether the contacts are good and reliable. Otherwise, the application of potentiometers with shortcomings will not only affect the normal operation of equipment circuits, but also may cause damage to other components in the circuit.            

2. When the potentiometer is installed in the circuit, more attention should be paid to the correct connection of the three pins of the potentiometer. If there is a wrong connection, the application of the potentiometer may lead to some shortcomings such as the failure of volume dispatching or the inactivity of the dispatching volume.            

3. In addition to the 250K audio tapered potentiometer switching potentiometer, there is a push-pull type with switching potentiometer in the market, so we need to make clear the difference between the two types of potentiometers.            Scheduling Method of 250K Audio Cone Potentiometer Switched Potentiometer            

As for the dispatching method of 250K audio tapered potentiometer switching potentiometer, it generally has positive and negative symmetrical power supply in the circuit of the equipment. First, when the central contact C of the potentiometer slides to the potentiometer A, the output voltage of OUT is + 12V. On the contrary, when the central contact C of the potentiometer slides to the potentiometer B, the output voltage of OUT is - 12V. At this time, the output C of the potentiometer can be in the range of 0- V. Therefore, the volume is the smallest when the central contact C of potentiometer slides to potentiometer B, and the volume is the largest when the central contact C of potentiometer slides to potentiometer A. Ultimately, when the central contact C of potentiometer slides to potentiometer B, it will lead to bad contact and other phenomena, and then the dispatching volume of potentiometer can not be turned off.