Erica Synths EDU DIY EG Eurorack Module Kit - Manual (Page 24)

COMPONENTS & CONCEPTS
APPENDIX
In this section, we’ll take a closer look at the components and elemental circuit design
concepts we’re using to build our module. Check these whenever the main manual
moves a bit too fast for you!
THE BASICS:
RESISTANCE, VOLTAGE, CURRENT
There are three main properties we’re interested in when talking about electronic
circuits: resistance, voltage and current
. To make these less abstract, we can use a
common beginner’s metaphor and compare the flow of electrons to the flow of water
through a pipe.
In that metaphor, resistance would be the width of a pipe. The wider it is, the more water
can travel through it at once, and the easier it is to push a set amount from one end to the
other. Current would then describe the flow, while voltage would describe the pressure
pushing the water through the pipe. You can probably see how all three properties are
interlinked:
more voltage increases the current, while more resistance to that voltage
in turn decreases the current .
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