Workshop: Introduction to electronics

learn schematics, simple circuit analysis, how to solder

Intro into Electronics

Basics of Electricity and Electronics

To understand electronics one must first understand electricity. Electricity is the movement of electron wave fronts. There are three main quantities used in measuring electricity, those being, Voltage, Current, and Resistance.

Volts

volts or voltage are energy per charge, it is measured in either AC or DC, depending on the power source, its unit is V, and its variable is also V.

Current

Current is charge per time, it is measured in amps, its unit is A, and its variable is I.

Resistance

Resistance is the opposition to current flow, its unit is omega, and its variable is R

Equations and laws

The way Volts, Current, and Resistance are equated is through various laws. Some of those laws being Ohms law, Kirchhoff’s voltage law, Kirchhoff’s current law , and the voltage divider law.

        Ohms Law
                  V=IR and P=IV 
                   "V" volts 
                   "I" Current 
                   "R" Resistance 
                   "P" Power 
         This law equates volts, Current, Resistance, and Power
       
        Kirchhoff’s voltage law 
                 the sum of all the voltage is equal to 0 
                 ΣV=0        
        Kirchhoff’s current law
               the sum of the currents of currents at the node is equal to 0
               used when currents are split at a node, 
               ΣI=0
        voltage divider law
            Vx=(Rx/Rt)*Vs
         There is also rules for parallel resisters and resisters in series
                  Resister in series add linearly 
                          Rx=R1+R2
                  Parallel Resisters 
                          Rt=(1/Ra+1/Rb)^(-1)