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What is Portable Power Pack and Battery Charger about?

This document contains summaries of several electronics projects: 1. A portable power pack using an LM1086 voltage regulator that can provide backup power for mobile phones when an electrical outlet is unavailable. 2. An automatic Ni-MH battery charger circuit that uses an op-amp to automatically shut off charging when batteries are fully charged. It can charge 1-10 batteries and has LED indicators to show charging status. 3. A simple battery level indicator circuit that uses an MN13811G IC and transist

Author

Darren Troy Lingao Mayor

Language

EN