Photocoupler
NE555CD4069
The 45W MagSafe Power Adapter has a magnetic DC connector, so if someone trips on it, the power cord disconnects harmlessly, keeping your MacBook Air safe. It also helps prevent the cable from fraying or weakening over time. Additionally, the magnetic DC helps guide the plug into the system for a quick and safe connection.
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Shenzhen Waweis Technology Co., Ltd. , https://www.szwaweischarger.com