How long will the LED from the crown shine?

Good afternoon. How long will the red LED from the crown burn through the resistor, does the LED go 2.3 V? Many thanks.

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Posted: Updated: 14.08.2018 1 comment
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  • Admin
    08/14/2018 at 11:05

    Hello! If the crown is alkaline - its capacity is about 600-625 mAh, the LED consumes 20 mA (this is the nominal value, and how much you set the current with the resistor is known to you), then 600/20 = 30 hours. This is in theory, in practice, the LED will start earlier, because the voltage at the battery terminals and the output current will drop.

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