This is a simple portable rain and steam detector in one circuit. It is compact in size, runs on 9V battery and is easy to assemble. Circuit and working The circuit diagram of the portable rain and steam detector is shown in Fig. 2. It is built around transistor T1, piezo buzzer PZ1, 9V battery […]
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Credit- EFY. Published by Department of EEE, ADBU: tinyurl.com/eee-adbu
