Power supply 220 AC, light string 24 DC how to use?

1.The use of LED lamps must be equipped with constant current source power supply, which is selected according to the power voltage of the lamp.

2.If the normal voltage is 24 DC, you can choose a 20-30V constant current source.

Then it must be converted from 220V AC to 24V constant current circuit to have a way to drive the string lights.

Add a power adapter, i.e. a 220V AC to 24V DC device, and you can use it.

Use DC24V switching power supply, select the power of switching power supply according to the power of the bulb, connect AC220V to the switching power supply, and DC24V to 24V lamp.

First, it needs to be equipped with the corresponding power supply.

2. It can also be used through full-wave rectification to connect ten strings of lights in series.

As long as five 24V lamp beads are connected with a rectifier diode, and then the power supply is turned on, it can be ignited, because the AC is rectified into DC output, and half of the power consumption is nearly 110V to protect the lamp beads from burning.

You need to use an AC to DC module to convert 220V AC to 24V DC.

It is necessary to transfer an AC-DC transformer, which is called a switching power supply on the market. The main specification is that the voltage should be equal to the voltage of the lamp, and the power should be a little larger than the power of the lamp.

Yes, there is a half probability that it will not light up.

There are 24V DC power supplies available on the market. Buying one is the best option.

Buy a power converter and convert 220 electricity into 24V, preferably with a lighting controller.

Power supply 220 AC, light string 24 DC how to use?

Hello dear, glad to answer for you. There are two ways to use 220V AC power supply to supply 24V DC string lights: one is to use a transformer, which can convert 220V AC power into 24V DC power, and then supply 24V DC power to the string lights.

The other is to use a DC-DC converter, which can convert 220V AC to 24V DC and then supply the 24V DC power to the string lights. In addition, when using a 220V AC power supply to supply power to a 24V DC string of lights, it is also necessary to pay attention to safety issues and ensure that the contact between the power cord and the string lights is firm to avoid dangerous situations such as short circuits.

Summary. If there are motors and transformers, the current through the motor does not form a pulse, which may cause the starting capacitor to burn out due to excessive current, and the motor cannot be used normally; If it is an electrical appliance with a transformer, such as a TV computer, the DC current cannot pass through the AC transformer, and the appliance does not work. If it is only a pure resistance electrical appliance, such as an electric kettle and tungsten lamp, it may still work.

If there are motors and transformers, the current through the motor can not form a pulse, but the seepage can make the starting capacitor burn out due to excessive current, and the motor can not be used normally; If it is an electrical appliance with a transformer, such as a TV computer, the DC current cannot pass through the AC transformer, and the appliance does not work. If a single acre shouting Wang is a pure resistance electrical appliance, such as an electric kettle and tungsten wire Xunzi lamp, it may still work.

I'm talking about b-string lights.

It's pretty much the same. It's a lot, I ask what you should answer me. Well.

The output of the 24V switching power supply should not be coarsely used to drive the light strip.

The transformer voltage is 12V lower than the normal working voltage of the light strip, which is not a small difference. Generally, the light strips tend to emit light with LEDs, and only these LEDs emit light when they are normally conducted. Now if the voltage at both ends of the light strip drops from 36V to 24V, it is possible that the LED cannot be turned on positively, and it will not be able to emit light.

Light strip is the abbreviation of LED light strip, most people are not used to the noun is too long when they say it, so the front LED is omitted, and it is directly called light strip. In this way, the name of the light strip also includes many old light strips that directly connect LEDs with wires instead of FPC or PCB, and of course also include flexible light strips and hard light strips.

Scope of application:

Domestic users also like to use the keyword LED flexible light bar or flexible light bar to search for rock search, the same product, the name is different, but the people who adapt to it are not the same. LED strip light, LED strip light has been widely used in furniture, automobile, advertising, lighting, wheel leakage and other industries.

At the angle between the countertop glass and the façade glass, straight or arc. Applicable occasions: jewelry cabinets, cosmetics cabinets, boutique cabinets, wine cabinets, glassware cabinets, cultural relics display cabinets, medicine cabinets, bar counters, supermarket refrigerated display cabinets, etc.

It's not something that can be said in one sentence. Here are two ways to give you a suggestion for reference:

1.Look at the use.

In the case of lighting, the actual power is only the rated power.

1 4, the filament temperature is low, the luminous efficiency is low, the light is dim, it is not recommended to use, but it can also be used temporarily (before wiring.

See 2 below).

During extracurricular group activities, if a resistor is missing in the 12V circuit (generally the power is large, it is not easy to find. There should be other resistors in the circuit), and the resistance value of the bulb is appropriate and can be used, but pay attention to heat dissipation to avoid disasters. (Ref. 3).

2.Look at the power supply.

Although the voltage of the 24V bulb is higher, the resistance is not necessarily large, if the allowable current of the power supply in the 12V circuit is small, set to, then the resistance in the 12V circuit should not be less than 24. If the resistance of the 24V bulb is less than 24, the output current of the power supply will be greater, which will damage the power supply and cannot be used. If the resistance of the 24V bulb is greater than 24, the current output of the power supply will be less than that, and the power supply will not be damaged.

Estimation method of 24V lamp resistance: r=24 i, i is the current marked on the lamp; It is also possible to use r=24 24

p, p is the rated power marked on the lamp.

DC 54V to 24V light strip will burn out, and the light strip voltage is doubled!

The voltage of the light strip is seriously inconsistent with the power supply voltage, which will burn out the light strip. However, two sets of 24-volt strips can be connected in series to a 54-volt power supply.

The voltage is too high, if there is really no suitable power supply, you can bring two sets of light strips in series to use together.

The voltage does not match, and it cannot be directly connected to the light strip.

If you do this, the light strip will be burned out, 54V has higher insulation requirements, and for the electronic devices that do not match in 24V, it may be broken down due to high voltage.

It can be lit but cannot be used, the voltage is high, and the light strip will be burned after a while.

The DC voltage is too high, and a 24-volt light will be bright, and then it will burn out immediately. Do not use more than the rated voltage! Otherwise, electrical failure is likely to occur.

Your question depends on the filter circuit to be accurate.

If you don't use filtering, after 220V rectification, you can directly string 9-10 pieces.

If you don't connect so much, it's easy to calculate: the current of 1 lamp is 2 24=.

The 220V full-bridge rectified DC voltage is about 200V without filtering.

Normal series 9-10 lamps, every less string of 1 lamp, on a string of 24 24 2 = 288 ohm resistor, the actual power dissipation of this resistance in 2 watts, generally take 2-5 times the margin, 288 ohm is not a finished product, you can use 5-10 watts of 300 ohm resistance instead.

With only one lamp, you can connect 9 300 ohm resistors in series, which is 2700 ohm 30 watts.

Your design is bad, it's too cumbersome, and it's not safe.

First transform, then rectify, and then connect your DC lamp.

Required components: a number of wires, a wiping head, a 24V switching power supply, model: S-100-24, **about 30 yuan.

It depends on what kind of rectification is used, and the single bridge and the whole bridge are different.

220V can be directly connected to 10 24V DC lamps, no rectification is required, and the filament bulb voltage is not divided into AC and DC.