Measure the down lead with a multimeter. Among these two pairs of wires, the connected two pairs are negative electrodes, and the unconnected two pairs are positive electrodes of L and R. ..

Headphones are divided into positive and negative electrodes. Commonly used headphones are four wires: microphone, ground wire, right channel and left channel. The ground wire is connected to the negative electrode, and both speakers have the same color ground wire. You can tell which is the negative electrode, and the remaining one is the positive electrode and the channel line.

Generally speaking, the earphone cable will be colored, with green as the left channel positive electrode, red as the right channel positive electrode and yellow as the negative electrode. If the color is confusing, my personal method is to either listen to it by welding or measure it with a multimeter.

Red right channel positive electrode, green left channel positive electrode and yellow negative electrode, regardless of other colors, are all wire-controlled, as long as the plug is connected, and the wire-controlled wire does not need to be connected to the unit. In the audio jack on the back panel of the computer, the microphone is connected in red, the earphone or speaker is connected in green, and the audio input port is in blue.

The four colored lines you mentioned represent the six red and blue lines on the left, with two positive and negative poles.

The two lines you said are used to divide the left and right channels. Generally, the male * * wire is the positive electrode, and the other two wires are regarded as the negative electrode. Usually, the bus line is copper, the left channel line is blue or green, and the right channel line is red.

Direct current does not pass through the earphone, so the earphone cable does not distinguish between positive and negative wires. Headphones pass through alternating current signals with varying audio frequency, only signal wires and ground wires. The signal wire and the ground wire are connected backwards, which affects the phase of the sound. The identification of phase needs professional identification, which has little influence on the general public.

Hello, the two contacts of Bluetooth headset are positive and negative respectively. The positive electrode is usually a metal contact, while the negative electrode is a black contact. It is very important to correctly distinguish the positive and negative poles in the use of Bluetooth headset, because if the headset is inserted incorrectly, it may not work properly or be damaged.

Normally, the battery will be marked with "+"symbol, which is the positive electrode, and the other end will be marked with "-"symbol, which is the negative electrode. At the same time, only the positive electrode has a "+"on the battery, and the negative electrode does not. Color can also represent positive and negative poles: red represents positive pole and black represents negative pole.

Commonly used headphones are four wires: microphone, ground wire, right channel and left channel. The ground wire is connected to the negative electrode, and both speakers have the same color ground wire. You can tell which is the negative electrode, and the remaining one is the positive electrode and the channel line.

If it's wire-controlled-it's easy to distinguish between positive and negative, just wear it on your ear normally.

Headphones are divided into positive and negative types.

Direct current does not pass through the earphone, so the earphone cable does not distinguish between positive and negative wires. Headphones pass through alternating current signals with varying audio frequency, only signal wires and ground wires. The signal wire and the ground wire are connected backwards, which affects the phase of the sound. The identification of phase needs professional identification, which has little influence on the general public.

It is necessary to distinguish the positive and negative poles when changing the earphone cable. However, if the left and right channels are connected in reverse at the same time, it will not affect the listening effect, but it is not good for headphones when some models are used.

Hello, the two contacts of Bluetooth headset are positive and negative respectively. The positive electrode is usually a metal contact, while the negative electrode is a black contact. It is very important to correctly distinguish the positive and negative poles in the use of Bluetooth headset, because if the headset is inserted incorrectly, it may not work properly or be damaged.

If there are four headphone cables falling off, how to judge the pros and cons?

1, the earphone is an alternating current signal with varying audio frequency, and there are only signal wires and ground wires. The signal wire and the ground wire are connected backwards, which affects the phase of the sound. The identification of phase needs professional identification, which has little influence on the general public.

2. The color is different. The common Bluetooth headset has four wires connected inside, and the colors are different. When they are disconnected, the positive and negative poles can be distinguished according to their colors. Red is the positive power supply, black is the negative power supply, green is the USB interface cable, and orange is the earphone channel cable.

3, commonly used headphones are four wires: microphone, ground wire, right channel, left channel negative ground wire, both sides of the speakers have ground wires, the color of the wires is the same, you can judge which is the negative electrode, the remaining one is the positive electrode, and the channel wires are connected.

4. The four colors of lines you mentioned represent six red and blue lines with two positive and negative poles on the left.

How to divide the positive and negative poles when Bluetooth headset 4 is broken?

1. Generally speaking, the headphone cable will be colored, with green as the positive left channel, red as the positive right channel and yellow as the negative electrode. If the color is confusing, my personal method is to either listen to it by welding or measure it with a multimeter.

2. Normally, the battery will be marked with "+"symbol, which is the positive electrode, and the other end will be marked with "-"symbol, which is the negative electrode. At the same time, only the positive electrode has a "+"on the battery, and the negative electrode does not. Color can also represent positive and negative poles: red represents positive pole and black represents negative pole.

3. The earphone doesn't have direct current, so the earphone cable is not divided into positive and negative wires. Headphones pass through alternating current signals with varying audio frequency, only signal wires and ground wires. The signal wire and the ground wire are connected backwards, which affects the phase of the sound. The identification of phase needs professional identification, which has little influence on the general public.

4. Hello, the two contacts of Bluetooth headset are positive and negative respectively. The positive electrode is usually a metal contact, while the negative electrode is a black contact. It is very important to correctly distinguish the positive and negative poles in the use of Bluetooth headset, because if the headset is inserted incorrectly, it may not work properly or be damaged.

5. As follows: left horn anode, left horn ground wire, right horn anode and right horn ground wire. Four lines! It can also be said that it is three wires, because two ground wires are together. You can measure two more ground wires, which should be connected together, but only separate them when necessary. The two horn wires are not connected together.

6, commonly used headphones are four wires: microphone, ground wire, right channel, left channel negative ground wire, both sides of the speaker have ground wires, the color of the wires is the same, you can judge which is the negative electrode, the remaining one is the positive electrode, and the channel wire.

How to divide the earphone plug into positive and negative?

Direct current does not pass through the earphone, so the earphone cable does not distinguish between positive and negative wires. Headphones pass through alternating current signals with varying audio frequency, only signal wires and ground wires. The signal wire and the ground wire are connected backwards, which affects the phase of the sound. The identification of phase needs professional identification, which has little influence on the general public.

The correct way to distinguish between positive and negative electrodes is to observe the color and shape of earphone contacts. The positive electrode is usually a short contact, while the negative electrode is a long contact. In addition, some Bluetooth headsets will mark "+"and "-"symbols on the contacts to help users distinguish the positive and negative poles.

It corresponds to the left channel anode, the right channel anode, the male and the female respectively, and there is also a section with wire control. There are still some changes between international standards and non-international standards. I typed it and said it would take a long time. It is recommended to see the wiring diagram of Baidu earphone plug clearly.