I changed to a volume potentiometer of the same model according to the original machine, why can t t

Hello, because you changed this volume potentiometer.

The specifications and configurations of the original machine do not match.

Failure to use normally.

So this volume can't be adjusted.

The main parameters of the potentiometer.

1.Nominal resistance, zero resistance, and power rating.

The nominal resistance value belongs to the resistance value clearly marked in the potentiometer, that is, the resistance value between the two fixed plate ends of the potentiometer; The zero resistance refers to the minimum resistance of the potentiometer, that is, the minimum resistance between the moving chip end and any certain chip end; The rated power of the potentiometer refers to the maximum power allowed to be consumed by the long-term continuous load at the specified rated temperature when the atmospheric pressure is 87 107 kpa in the AC and DC circuits.

2. The resistance value change characteristics of the potentiometer.

The resistance change characteristics of the potentiometer refer to the relationship between the resistance value of the potentiometer with the length of the movable contact movement or the angle of rotation of the rotating shaft, that is, the resistance output function characteristics. There are 3 commonly used types:

1) Exponential (Z-type) (2) Logarithmic (D-type) (3) Linear (X-type).

3. The resolution of the potentiometer.

The resolution of the potentiometer is also known as the resolution of the potentiometer, for the winding potentiometer, when the moving contact moves every turn, the ratio of the output voltage change of the potentiometer to the output voltage is the resolution. In the case of linear wound potentiometers, the theoretical resolution is the reciprocal of the total number of turns wound and is expressed as a percentage. The greater the total number of turns of the potentiometer, the higher the resolution.

4. The dynamic noise of the potentiometer.

The dynamic noise of the potentiometer refers to the electrical noise generated when the dynamic contact of the potentiometer slides on the resistor body under the action of applied voltage. Dynamic noise is the main parameter of sliding noise, and its magnitude is related to the speed of the rotating shaft, the contact resistance between the contact point and the resistor, the uneven change of resistivity of the resistor, the number of dynamic contacts, and the magnitude of the applied voltage.

If you are sure that you are replacing a volume potentiometer of the same model. Then I analyze that there should be a problem with the contacts in your potentiometer. It should be in the process of your welding, you caused.

There are two reasons, one is that the potentiometer itself is broken, and the other is that the welding potentiometer is broken.

It should be that the model of the potentiometer is wrong and does not match, so it cannot be used.

It should be that your structure is not in place, or there is a lack of metal contacts, so you will pay for the adjustment.

Summary. Hello, glad to answer for you. The wiring method of the potentiometer for adjusting the volume of the audio, the standard connection method is:

The rotating handle of the 1 potentiometer is facing itself, from left to right, it is 1, 2, 3 pins, 1 pin is grounded, 2 pin is connected to adjust the output (equivalent to the input of the power amplifier), and 3 pin is connected to the adjustment input (equivalent to the output of the preamp signal).

The potentiometer used to adjust the volume of the speaker is broken, how to wiring it?

Hello, I am inquiring for you here, please wait a while, I will reply to you immediately <> Hello, I am happy to answer for you. The standard connection method of the potentiometer for adjusting the volume of the audio is: 1 The rotary handle of the potentiometer is facing itself, from left to right are 1,2,3 pins, 1 pin is connected to the leakage of the ground, 2 pin is connected to adjust the output (equivalent to the input of the stool search and training amplifier), and 3 pin is connected to adjust the input of the jujube (equivalent to the output of the pre-amp signal).

I hope the above is helpful to you If you are satisfied with me, please give me a thumbs up

What is the reason why the radio volume cannot be turned up? The same goes for a new potentiometer. What's going on?

Dear, hello, the reason why the volume of the radio can not be adjusted to a new battery is: the volume beat and the speed key are out of order, and there may be a Caton cause, in response to this situation, you can turn off the radio first, and then restart it again, at this time, try whether the sound base of this amount of key can be used normally, if it is still not improved, then the volume key is broken, it is recommended to repair the radio in a special place.