This stuff is good to remember

Resistors [R] .
Colour codes for normal and for precision resistors
resistors

Capacitors [C] .
Capacitors could be regarded as "frequency dependent resistors".
This is only part of the story, as they in fact are "charge storing devices" and also change the phase...

When you don't care about the phase, the impedance of a capacitor can be calculated as:
Z = 1 / (2*pi*f*C), where pi=3.14, f=frequency in Hz, C=capacitance in Farad.

At a frequency of 1kHz, a capacitor of 10nF has the same impedance as a resistor of 16kOhms;
Thus when making an AC voltage divider with a 10nF capacitor and a 16k resistor, one could expect that the
output voltage would be half, but because of the 45degrees phaseshift, the result is like this instead:
(gain is RED, phase is BLUE)
capacitors


Metric-system prefixes .
NB in electronics the prefixes are often used without decimal point in order to make it more readable, like this:
  1k5 = 1.5k = 1500
  4u7 = 4.7u = 4.7 x 1/1000000
metric

Connectors .
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