What Are Those Hieroglyphics on Your Laptop Charger?
Look on the back of your laptop charger and you’ll find a mess of symbols and numbers. We’d bet you’ve looked at them before and gleaned little or no understanding from what they’re telling you.
These symbols are as complicated as the label on the tag of your shirt that have never taught you anything about doing laundry. They’re the marks of standardization and bureaucracy, and dozens of countries basking in the glow of money made from issuing certificates.
The switching power supply is the foundation of many household electronics — obviously not just laptops — and thus they’re a …read more
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