LED backlight power protection circuit diagram
description:
LCD TV screens are bigger and brighter, they require more operating voltage and more operating current, and many circuit protection devices can be used to help protect the LCD display from excessive current or excessive voltage transients. Damage caused by the change. Overcurrent protection can be either a fuse or a resettable PPTC (Polymer Positive Temperature Coefficient) device. Which option to choose depends on the design of the LCD, the type of hazard the product may be exposed to and the associated safety requirements.
PPTC devices are generally suitable for circuits that experience large inrush currents during startup. PPTC devices withstand the impact of inrush currents and eliminate the need to replace burned fuses. The fuse is suitable for circuits that do not require self-recovery, or that cause an overcurrent surge only in the event of a system error. A fuse is also a practical solution when a soft-start circuit is used to limit inrush current.
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