Steren K-800 Manual De Instrucciones página 15

15.- One way conductivity of a LED
Close the switch 15, the LED 17 won't light up, it is because the LED
only allows current from positive to negative and not from negative to
positive.
16.- Connecting a LED, lamp and electric motor in series
After assembled the circuit, only the LED 17 will light up, the lamp 18
and the motor 24 won't work because of the low current.
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