The difference between constant voltage light strips and constant current light strips

2024-07-17

The main difference between constant voltage Light Strips and constant current light strips is their working principle, applicable scenarios and brightness uniformity.

Working principle and applicable scenarios:

The constant current lamp strip uses linear IC constant current technology to ensure that the current of each LED lamp bead remains consistent within the operating voltage range. This technology makes the constant current light strip suitable for long-distance connections, up to 20-50 meters in length, without additional voltage drop issues, so the brightness remains uniform from beginning to end. This characteristic of the constant current light strip enables it to meet the lighting needs in different scenarios, including conventional color temperature, CCT adjustable color temperature, RGB and RGBW color constant current, and other types.

The voltage of constant voltage light strips is constant at DC12V/24V, and the length is usually limited to 5 meters. When single-ended power supply is used, the brightness of the lamp strip will be the same from the beginning to the end. But beyond this length, the light strip will have uneven brightness due to voltage drop. Constant voltage light strips are relatively common in the market, including conventional LED light strips, silicone neon light strips and other Linear Lighting products. They are suitable for a wide range of scenarios, especially where safe voltage is required.

Brightness Uniformity:

Since the current consistency is guaranteed, the constant current light strip can maintain the uniformity of brightness even when connected over long distances.

In contrast, constant voltage lamp strips will cause uneven brightness due to uneven voltage distribution after exceeding a certain length.

In summary, which type of light strip to choose depends on the specific application requirements. For example, scenes that require long-distance connection and uniform brightness are suitable for constant current light strips, while scenes with short distance and low requirements for brightness uniformity are more suitable. Suitable for use with constant voltage light strips.