Circuit analysis Tutorial
AKNM Circuit Magic- circuit analysis software
AC Electrical Devices & schematics symblos
Electronic component are classed into either being Passive devices or
Active devices.
By using schematics symbols we can represent real-life devices.
Resistance -This is a
resistance, measured in units ohms, . Most often it will be a resistor.
Inductor - A schematics
symbol inserted into an electrical circuit to introduce a specified inductance.. Most often it will
be a coil.
Inductance-
The property of a circuit which impedes a change in current. Inductors are the usual source
of inductance. Inductance is measured in henrys. In electronic circuits, the usual measure of
inductance is henrys (H), milihenrys (mH) or microhenrys (µH), 1, 1e-3 or 1e-6 henrys
respectively.
or 
Capacitor - A schematics symbol inserted into
an electrical circuit to introduce a specified capacitance.
Definition: The property of a circuit which impedes a change in voltage. Capacitors are the
usual source of capacitance. Capacitance is measured in farads in honor of Michael Faraday.
In electronic circuits, the usual measure of capacitance is microfarads (µF) or picofarads (pF),
1e-6 or 1e-12 farads respectively.
This is a AC voltage
source, with a voltage of , measured in units of volts, V. The most common AC Voltage Source
you will see will be a home unit. .
A device inserted into an
electrical circuit to introduce a specified alternating current (AC). An AC current has a
magnitude, phase and frequency.
