I have a 12v 1amp power supply which i step down with a 5v 2a voltage regulator. It is used to power 20 LED's each drawing a maximum of 80ma, giving a total draw of 1.6a. The lights are controlled by an Arduino Nano. When I turn it on, the voltage regulator outputs ~5v, but after some time (20-30 s…

Voltage is dropping, why?

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