상황
Design a reliable emergency fan that runs on battery and can be recharged from AC mains, ideal for power outages or outdoor use.
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01
Netlist mode for auto-layout
02
12V lead-acid battery with diode-OR for automatic switchover between charging and battery power
03
Simple SPST switch for manual fan control
04
LED indicator for charging status
Suitable for DIY projects, educational demonstrations of power electronics, and basic emergency appliances.