Introduction

Learn about Symbulator and how it can help you focus on learning how circuits work, instead of struggling with math. Get the latest version of Symbulator and get ready to roll.

Lesson 1

Direct current analysis

Learn to describe a circuit in Symbulator, and how to run a direct current analysis. Learn how to describe a voltage source using e, and a resistor using r.

Lesson 2

Symbolic circuits and Expert Mode

Learn how to solve different types of symbolic circuits in Symbulator. Use Solve in Symbulator. And explore the powerful Expert Mode, for the ambitious user.

Lesson 3

Current sources, conductances and dependent sources

Learn how to describe a current source using the j element. Simplify parallel resistors using the pr function and its shorthand. Learn to describe conductances and dependent sources.

Lesson 4

Shorts, equivalent resistance and Thévenin/Norton

Learn how to describe a short circuit using the s element. Learn how to find equivalent resistances, and Thévenin and Norton equivalents.

Lesson 5

Operational amplifiers

Learn how to describe an ideal operational amplifier (Op Amp) using the o element. And practice what you learn in a variety of solved op-amp problems, both easy and hard.

Lesson 6

Transient analysis

Learn to run a transient time-domain analysis. Learn to describe capacitors with c and inductors with l. Limit the results, and plot answers in time.

Lesson 7

Alternating current analysis

Learn how to run an alternating current analysis (via phasor analysis). Learn how to describe capacitors, inductors, impedances and admittances, and sources for AC analysis.

Lesson 8

Power in AC circuits

Learn to solve average power and complex power problems in AC. Learn how you can use RMS values in Symbulator with the RMS phasors setting. Solve power factor problems using the pf mini-tool.

Lesson 9

Three-phase circuits

Learn to solve simple three-phase circuits in Y-Y, Y-Δ, Δ-Δ and Δ-Y configurations, both balanced and unbalanced, to find line and phase currents, voltages and complex power.

Lesson 10

Mutual inductance and ideal transformers

Learn how to describe a mutual inductance between two inductors or two impedances using the m element. Learn how to describe an ideal transformer using the t element.

Lesson 11

Bode plots and resonance

Learn to do gain and phase Bode plots for transfer functions of ω and s in the Plotting Tools card. Find the resonant frequency of an answer by solving for the frequency at which the reactance vanishes.

Lesson 12

The complex frequency domain

Learn to solve complex-frequency domain problems using fd. Move between the time domain and the s-domain with the t2s and s2t shortcuts. Learn to solve transfer function problems.

Lesson 13

Two-ports

Find the two-port equivalent of a network. Learn how to include two-ports in your circuit using the z, y, h, g, a and b elements. Calculate gains with the gain mini-tool.

Select problems from Nilsson & Riedel 12ed

Forty-three worked examples from Electric Circuits, each described in Symbulator and checked against the answer the book prints. DC, AC, TR and FD, with Expert Mode and symbolic answers where they earn their place.

Roll the credits

If you are interested in the people behind Symbulator, here's who made it and who helped, plus some acknowledgements. And some glowing reviews received over the decades.