These Electronics wiki pages develop techniques for analyzing electronic circuits, such as the circuit shown in the following schematic diagram.
Dimensions and Units
The units for electrodynamic and electronics calculations are often very confusing, so it behooves us to learn a little about the systems of units employed in electrodynamics and electronics before we attempt to solve any Puzzlers.Click the following link to visit a wiki page detailing the Dimensions and Systems of Units for Electrodynamics: Electrodynamics: Dimensions and UnitsIn addition, a review of a few topics in the mathematics of Electrodynamics (and Electronics - especially Laplace Transforms) is provided on the following wiki page: Math for Electrodynamics
This Electronics wiki page covers the applications of Maxwell's Equations to electrical devices, such as resistors, capacitors, and inductors, and their circuits. If you are interested rather in Maxwell's Equations themselves, then the Puzzlers: 8 (Electrodynamics) wiki page introduces, derives, and discusses these.
Click on this link to go to the electrodynamics page: Puzzlers: 8 (Electrodynamics)
This topic derives Ohm's Law, the phenomenological rule relating the current, voltage, and impedance of electrical devices. It also explains the origins of the Kirchhoff Voltage and Current Laws, the rules employed to analyze electronic circuits.
Electronics - Ohm's and Kirchhoff's Laws <-- click to view the Ohm's and Kirchhoff's Laws wiki page.
Electrical energy can undergo four processes. It can be impeded by a resistor; essentially the electrical energy is converted to another form, such as heat or sound. Electrical energy can be stored in the magnetic field of an inductor (coil). It can also be stored in the electric field of a capacitor. And, lastly, electrical energy can be radiated away by an antenna (electromagnetic radiation). This topic introduces the first three of these processes and describes the electronic devices that implement them. It also explains how phasors are employed to describe the steady state behaviors of these devices.
Electronics - Resistors, Inductors, Capacitors <-- click to view the Resistors, Inductors, and Capacitors wiki page.
Once we understand how the resistor, inductor, and capacitor operate, we may then construct electronic circuits from these devices. This topic introduces the two chief methods, Mesh Currents and Nodal Voltages, for analyzing electronic circuits.
Electronics - Linear Circuit Analysis <-- click to view the Linear Circuit Analysis wiki page.
Because inductors store energy in magnetic fields, and the magnetic fields often extend considerably beyond the physical size of the coil, two inductors may interact with each other through their external magnetic fields. This leads to the concept of mutual induction, where one inductor influences the operation of another, and vice versa. Transformers are the epitome of mutual inductance, and they are extremely useful devices for converting voltage levels.
Electronics - Mutual Inductance <-- click to view the Mutual Inductance wiki page.
Semiconductor junctions are the principal form of active electronic devices. This topic provides a brief introduction to the operation of the semiconductor junction in order to derive the equation controlling the current through the pn junction. This equation is needed in order to describe how logarithmic and exponential amplifier may be constructed.
Electronics - Semiconductor Diodes <-- click to view the Semiconductor Diodes wiki page.
For the analog electrical engineer, particularly at low frequencies, the operational amplifier, and especially the integrated circuit op amps, have become an indispensable tool. This section describes how to analyze op amp circuits, starting with the ideal model, the so-called virtual short circuit model, of the operational amplifier, and extending the treatment to non-ideal op amps.
Electronics - Op Amps <-- click to view the Op Amps wiki page.
Laplace Transforms convert integrodifferential equations in the time domain into algebraic equations in the s domain that are more easily solved. The s domain solutions are then Inverse Laplace Transformed to yield the time domain solutions of the integrodifferential equations.
Electronics - Laplace Transforms and Transients <-- click to view the Laplace Transforms wiki page.
This topic uses Laplace Transforms to analyze electronic circuits, concentrating on op amp circuits such as active filters. Laplace Transforms allow Bode Plot analyses that illustrate the transfer function of a circuit.
Electronics - Laplace Transforms: Electronics Applications <-- click to view the Laplace Transforms: Electronics Applications wiki page.
So far we have been studying stable electronic circuits, that is, circuits that give a single output voltage for every possible input voltage. While this is a very useful characteristic and might appear to be all that is needed, it turns out that unstable electronics circuits are extremely useful too. In particular, unstable electronic circuits are required for oscillators. The following Electronics - Oscillators wiki page treats unstable electronic devices.
Electronics - Oscillators <-- click to view the Oscillators wiki page.
<-- click the download button to download the full Electronics Chapter PDF file.
<-- click to view the Electronics Bibliography.
<-- click to view the Electronics Index.