ftt
Newbie level 3
I found just simple circuit with resistor 470 - LED - about 2,0V - resistor 470. The voltage is probably 9V. I understand why there is the first resistor before LED, but I do not know there's why another one?
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ftt said:I found just simple circuit with resistor 470 - LED - about 2,0V - resistor 470. The voltage is probably 9V. I understand why there is the first resistor before LED, but I do not know there's why another one?
the lower resistor adds some voltage to the output which reaches about 3,6V