Three details to teach you how to choose Taxi LED Roof Light Screen Often working in a high current and high voltage environment, working in this environment is likely to damage the core component of the product, the switch tube. This kind of fault is relatively troublesome for beginners and novices to handle. The most common way for general users is to ｒｅｐｌａｃｅ the new switch tube. Often this improper handling method without finding the root cause of the problem will cause the new switch tube to be damaged again. Lumi Link, a manufacturer of bus LED display screens, summarizes the following methods for dealing with the switch tube of the taxi LED display.
1. The external voltage of the car top LED display screen is too high, causing the opening light to be damaged. The voltage stabilizing circuit system should be checked in time. The voltage stabilizing circuit problem increases the output voltage of the switch tube and also causes damage to the switch tube itself.
2. Overcurrent damage to the switch tube of the taxi LED display screen Overcurrent damage to the switch tube of the taxi LED display screen is generally caused by the heat sink being too small or not firmly fixed, the load being too heavy, and the short circuit between the turns of the switch transformer.
3. There is a problem with the drain protection of the switch tube of the taxi LED display screen, which will also cause the drain voltage of the switch tube of the taxi LED display screen to be too high and break through the switch tube.
4. The most common damages of the switch tube of the taxi LED display are large opening loss and large closing loss. Large opening loss is caused by the ability to enter the saturation state within a given time, while the closing loss is caused by the inability to enter the stop state from the amplification state within a given time.
5. The quality of the switch tube varies. When choosing products, you should also choose manufacturers with good brands and good reputations.