Please don't be intimidated by electric circuits and wires. (Electricity and its devices are everywhere in your daily life.) However, please keep in mind for the following:
1. Please follow your teacher and the manual instructions to avoid any trouble related to electricity.

2. Don't turn on the power supply without making sure whether the circuit is correct.

3. Don't keep the power turned on for a long time. (Switch it off immediately after measurement.)

4. Don't use a high voltage (not more than 5 volts), or it will burn your circuit!

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