Negative surge protection circuit, power supply system and electronic equipment

• Main Authors: HUANG JINHAN, LI HANGGUI
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to a negative surge protection circuit, a power supply system and electronic equipment. The negative surge protection circuit comprises a clamping circuit, an anti-reverse circuit and a follow current energy storage circuit, the input end of the clamping circuit is electrically connected with the power supply input end; the input end of the anti-reverse circuit is electrically connected with the power supply input end through the output end of the clamping circuit; the output end of the anti-reverse circuit is electrically connected with the input end of the follow current energy storage circuit; the output end of the follow current energy storage circuit is electrically connected with the input end of to-be-powered equipment; the clamping circuit is used for absorbing surge energy and clamping the voltage to a safe working voltage range of the equipment to be powered; the anti-reverse circuit is used for preventing the negative surge current from flowing into the to-be-powered equipment