## General LED positive and negative and how to distinguish it?

1, the LED lamp distinguishes its positive and negative pole method as follows: 1, the newly bought LED has not cut the foot, the long foot is the positive pole. 2. Connect the LED with a 5V battery. If it is lit, the battery is connected directly to the LED. 3, use the multimeter resistance file or the diode file, if bright, the red meter pen is connected to the LED positive pole.

2. The difference between the positive and negative levels of the LED patch: look carefully at the front of the LED patch. There is a missing corner in a square or rectangle, a positive pole on the other side and a negative pole on the other side.

3. The long end of the led pin is positive, and the short end is negative. Or take a No. 5 battery (5 volts) and connect the two pins of the LED lamp beads. If the lamp is on, it means that the pin connected to the positive pole of the battery is the negative pole of the LED lamp bead, and the pin connected to the negative electrode of the battery is the positive pole of the LED lamp bead.

4. The Led lamp is divided into positive and negative electrodes. The positive and negative electrodes can be distinguished from the pins of the led lamp, in which the long end of the pin is positive and the short end of the pin is negative. In addition, according to the internal electrode of the led lamp bead, the smaller end is the positive end, while the larger end is the negative end.

5. The long end of the led pin is positive, and the short end is negative. You can also carefully observe the electrodes inside the lamp beads, the smaller one is the positive electrode, and the larger one is the negative electrode. Led lamp beads are a kind of semiconductor diodes that can convert electrical energy into light energy.

6, plug-in led lamp beads, long feet are positive, short feet are negative, you can also see that the size of the two feet inside the lamp beads is different, the big one is negative. Patch type, you can see that there is a gap at one end, the gap is negative (figure 1), you can also see that the inside side of the lamp bead is large and the other side is small, the small place looks like a horizontal, here is negative.

## How to distinguish the positive and negative electrodes of led lamp beads

1. The difference between the positive and negative levels of the LED patch: look carefully at the front of the LED patch. There is a missing corner in a square or rectangle, a positive pole on the other side and a negative pole on the other side.

2, plug-in led lamp beads, long feet are positive, short feet are negative, you can also see that the size of the two feet inside the lamp beads is different, the big one is negative. Patch type, you can see that there is a gap at one end, the gap is negative (figure 1), you can also see that the inside side of the lamp bead is large and the other side is small, the small place looks like a horizontal, here is negative.

3. LED lamp distinguishes its positive and negative electrodes as follows: newly bought LED has no cut feet, long feet are positive poles. Connect the LED with a 5V battery. If it is lit, the battery is connected directly to the LED. Use the multimeter resistor or diode gear, if bright, the red meter pen is connected to the LED positive pole.

4, LED lamp distinguishes its positive and negative pole method as follows: 1, the newly bought LED has not cut the foot, the long foot is the positive pole. 2. Connect the LED with a 5V battery. If it is lit, the battery is connected directly to the LED. 3, use the multimeter resistance file or the diode file, if bright, the red meter pen is connected to the LED positive pole.

## How to measure positive and negative electrodes with led lamp

1. One side of the missing corner of the lamp bead of the LED patch is the negative pole, and the middle and the relatively close side of the three solder joints on the back of the rectangle are the positive pole. Long feet with feet are positive and short limbs are negative.

2. The distinction between positive and negative poles of LED lamp beads: look carefully at the front of LED lamp beads. In both ends of LED lamp beads, there is a small missing corner at one end, which is positive at the end and negative at the other end. The positive and negative poles of the LED straw hat lamp are distinguished: the newly bought LED has not cut the foot, the long foot is the positive pole, and the corresponding other end is the negative pole.

3. LED lamp distinguishes its positive and negative electrodes as follows: newly bought LED has no cut feet, long feet are positive poles. Connect the LED with a 5V battery. If it is lit, the battery is connected directly to the LED. Use the multimeter resistor or diode gear, if bright, the red meter pen is connected to the LED positive pole.

## Could you tell me how to tell the positive and negative poles of the led lamp patch?

It is particularly important to judge the positive and negative pole of the patch LED lamp beads. The brightness of the lamp all depends on the patch LED lamp beads. The observation method of judging the positive and negative poles of the patch LED lamp beads is: overlooking, one side with color lines is the negative pole, on the other side is the positive pole.

The LED lamp distinguishes its positive and negative pole as follows: the newly bought LED has not cut the foot, and the long foot is the positive pole. Connect the LED with a 5V battery. If it is lit, the battery is connected directly to the LED. Use the multimeter resistor or diode gear, if bright, the red meter pen is connected to the LED positive pole.

The logo is different: the chip diode will have an inverted triangle symbol at the bottom, with a positive pole on one side and a negative pole on the other. The edge of the triangle symbol is close to the positive pole and the angle is close to the negative pole. The pin length is different: the positive pin of the LED is longer and the negative pin is shorter.

## Distinguishing between positive and negative electrodes of led lamp

The LED lamp distinguishes its positive and negative pole as follows: the newly bought LED has not cut the foot, and the long foot is the positive pole. Connect the LED with a 5V battery. If it is lit, the battery is connected directly to the LED. Use the multimeter resistor or diode gear, if bright, the red meter pen is connected to the LED positive pole.

The difference between the positive and negative levels of the LED patch: look carefully at the front of the LED patch. There is a missing corner in a square or rectangle, a positive pole on the other side and a negative pole on the other side.

LED lamp to distinguish its positive and negative methods are as follows: 1, the new LED has not cut the foot, the long foot is the positive pole. 2. Connect the LED with a 5V battery. If it is lit, the battery is connected directly to the LED. 3, use the multimeter resistance file or the diode file, if bright, the red meter pen is connected to the LED positive pole.

The long end of the led pin is positive and the short end is negative. Or take a No. 5 battery (5 volts) and connect the two pins of the LED lamp beads. If the lamp is on, it means that the pin connected to the positive pole of the battery is the negative pole of the LED lamp bead, and the pin connected to the negative electrode of the battery is the positive pole of the LED lamp bead.

The Led lamp is divided into positive and negative poles. The positive and negative electrodes can be distinguished from the pins of the led lamp, in which the long end of the pin is positive and the short end of the pin is negative. In addition, according to the internal electrode of the led lamp bead, the smaller end is the positive end, while the larger end is the negative end.

## How to distinguish between positive and negative poles of led lamp beads?

1, LED lamp to distinguish between its positive and negative pole method is as follows: newly bought LED has not cut the foot, long foot is positive. Connect the LED with a 5V battery. If it is lit, the battery is connected directly to the LED. Use the multimeter resistor or diode gear, if bright, the red meter pen is connected to the LED positive pole.

2, plug-in led lamp beads, long feet are positive, short feet are negative, you can also see that the size of the two feet inside the lamp beads is different, the big one is negative. Patch type, you can see that there is a gap at one end, the gap is negative (figure 1), you can also see that the inside side of the lamp bead is large and the other side is small, the small place looks like a horizontal, here is negative.

3, LED lamp distinguishes its positive and negative pole method as follows: 1, the newly bought LED has not cut the foot, the long foot is the positive pole. 2. Connect the LED with a 5V battery. If it is lit, the battery is connected directly to the LED. 3, use the multimeter resistance file or the diode file, if bright, the red meter pen is connected to the LED positive pole.

4. The distinction between positive and negative poles of LED lamp beads: look carefully at the front of LED lamp beads. In both ends of LED lamp beads, there is a small missing corner at one end, which is positive at the end and negative at the other end. The positive and negative poles of the LED straw hat lamp are distinguished: the newly bought LED has not cut the foot, the long foot is the positive pole, and the corresponding other end is the negative pole.

5. The long end of the led pin is positive, and the short end is negative. You can also carefully observe the electrodes inside the lamp beads, the smaller one is the positive electrode, and the larger one is the negative electrode. Led lamp beads are a kind of semiconductor diodes that can convert electrical energy into light energy.

6. The connecting pin of the large bracket is negative, and the connecting pin of the small bracket is positive. As shown in the figure, the pin with a large bracket (marked in yellow) corresponds to the negative pole of the LED bead, while the pin with a small bracket (marked in red) corresponds to the positive pole of the LED bead.