Introduction to Electronics design , passing first by intro to electricity then some PCB desigining Hacks . this was part of OSTA LAB internship program in Fablab Egypt . it is the same curriculum needed to pass MIT Fab Academy .
2. AC vs. DC
• The big advantage that alternating current
provides for the power grid is the fact that it is
relatively easy to change the voltage of the
power, using a device called a transformer.
Power companies save a great deal of money
this way, using very high voltages to transmit
power over long distances.
18. 4) LED
A light emitting diode is used to test circuit voltage outputs at every stage of
the circuitry.
A LED is simply a diode in which energy is released in the form of photons due
to electron transition in visible region.