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    Resistor values


    Nearest standard resistor values.

    Seriesbelownearestabove

    Code (472, 4702, 4R7, 01C) or a value (4.7k).

    Impedance matching

    Ohm · Divider · RC

    Fill in any two. Prefixes work: 4.7k, 20m.

    Vout = Vin · R2 / (R1 + R2)


    τ = R·C, f = 1 / (2π·R·C)


    Hex / Bin
    Plain numbers are

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      Hi, I’m Ali Fele Paranj.

      This is where I write down the things I learn, from electronics to pure math, the way I learned them. Every word is written by a human, for humans. Why that matters.

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      Sets & Functions
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      Sets & Functions

      Sets & Functions

      Oct 25, 20261 min read

      Definition

      A function f:A→B assigns to each a∈A exactly one f(a)∈B.

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