This video demonstrates how to determine the polarity of a DC power supply using a multimeter. The presenter explains the importance of knowing the polarity to avoid damaging electronic components. They show how to use the multimeter to test the voltage and identify the positive and negative terminals of the power supply.
531809 8 лет назад 1:59This video demonstrates a simple method to determine the positive and negative terminals of a speaker using a battery. The technique involves connecting wires from the battery to the speaker terminals and observing the speaker's movement. The direction of the speaker's movement indicates the correct polarity.
5570 8 месяцев назад 3:22