Why do light strips need a transformer?

1. Working principle of light strips

 The light strip is an electrical appliance that uses the luminous principle of LED lamp beads to make it glow by controlling the current. Because the LED itself has a relatively low operating voltage, generally between 2-3V, a current stabilizer or transformer is required to control it.

2. Why do light strips need a transformer?

1. Voltage is unstable

 Light strips have relatively high requirements for working voltage, and generally need to be within a relatively fixed voltage range such as 12V, 24V, 36V, etc. to work properly. If you use 220V AC power directly, it will cause problems such as unstable brightness and short life of the light strip.

2. Security

 The light strip itself is relatively fragile, and excessive voltage can easily cause damage or even cause safety accidents. The use of a transformer can convert high voltage into a low voltage suitable for the operation of the light strip, ensuring the safe use of the light strip.

3. Working principle of transformer

 The transformer is composed of two coils and an iron core, and realizes voltage conversion through the principle of electromagnetic induction. When the primary coil of the transformer is energized, magnetic flux is generated in the iron core, which then acts on the secondary coil through the iron core, causing an electromotive force to appear on the secondary coil.

 According to the principle of electromagnetic induction, when the number of turns of the secondary coil is greater than that of the primary coil, the output voltage will be higher than the input voltage, and vice versa.

 Therefore, when you need to convert 220V AC power into low voltages such as 12V, 24V, and 36V suitable for lamp strip operation, you only need to use a transformer to adjust the ratio of the coil turns.

4. Types of transformers

 In light strips, there are two commonly used transformers: power converters and constant current power controllers. The power converter is a power supply that converts 220V (or 110V) AC power into 12V (or 24V) DC power. Its output current can be controlled according to the number of switches. The constant current power supply controller controls the constant current output by adjusting the pipeline voltage to ensure stable light brightness. Two types of transformers are selected according to different application scenarios and needs.

5. How to choose a transformer

 The correct selection of a transformer must be strictly based on parameters such as voltage, power, current and type to ensure stable light brightness and avoid overheating and damage to the transformer due to improper selection.