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Free Animated Engineering Diagrams

Mechanical, electrical, civil, control, thermal, materials. The working diagrams of the built world.

70 live For: Engineering blogs · Vendor docs · CS/EE coursework · Tutorial sites

For engineering tutorial sites, vendor docs, and university courseware. Otto/Diesel/refrigeration cycles, three-phase power, transformer flux, op-amp configurations, PID feedback loops, truss analysis, beam loading, heat exchangers, materials stress-strain curves.

What this is
Free, embeddable, animated diagrams covering engineering topics (mechanical, electrical, civil, control systems, and more).
Who uses it
Engineering blogs · Vendor docs · CS/EE coursework · Tutorial sites
How to embed
Copy one line of HTML per diagram. No signup. No watermark. Works in WordPress, Webflow, Ghost, Substack, plain HTML.
Diagrams in this category
70 live (total in catalog: 70).
License
Free forever. The diagram and editorial explainer text are served from scrollchart.com so they can be updated over time to reflect new research.
URL
scrollchart.com/categories/engineering
Highlights

What you will find here

  • Mechanical: Otto, Diesel, refrigeration, gears
  • Electrical: AC vs DC, three-phase, transformers, op-amps
  • Civil: trusses, beams, bending moments, foundations
  • Control: PID, step response, Bode, root locus
  • Thermal & materials: stress-strain, heat exchangers
Sub-categories

6 topic areas in Engineering

Mechanical

Otto/Diesel/Brayton, refrigeration, gears, linkages, fluid power.

14 live
Electrical

AC/DC, three-phase, transformers, op-amps, filters, rectifiers.

14 live
Civil

Trusses, beams, bending moments, foundations, soil mechanics.

12 live
Control systems

PID, step response, Bode, root locus, state-space.

10 live
Thermal & fluids

Heat exchangers, conduction/convection/radiation, Bernoulli.

10 live
Materials

Stress-strain, fatigue, hardness, phase diagrams.

10 live
Catalog

Browse Engineering diagrams

All categories →

Mechanical 14 live

Otto/Diesel/Brayton, refrigeration, gears, linkages, fluid power.

Engineering Medium

Otto Cycle PV Diagram

Spark-ignition engine: intake, compression, power, exhaust on a pressure-volume plot.
Engineering Medium

Diesel Cycle PV Diagram

Compression-ignition engine: heat added at constant pressure, not constant volume.
Engineering Medium

Vapor Compression Refrigeration Cycle

Compress, condense, expand, evaporate - the four steps that move heat against the gradient.
Engineering Medium

Brayton (Gas Turbine) Cycle

Continuous combustion turbine cycle - the basis of jets and power-plant turbines.
Engineering Simple

Gear Ratios and Torque

Reducing gear count multiplies torque; raising it multiplies speed.
Engineering Medium

Four-Bar Linkage

A foundational mechanism: input crank, coupler, output rocker, ground - countless real-world applications.
Engineering Medium

Cam and Follower Profile

Cam shape determines follower displacement, velocity, and acceleration over a rotation.
Engineering Simple

Hydraulic Power Multiplication

Pressure constant, area changes - small input force becomes large output force.
Engineering Simple

Bearing Types Compared

Ball, roller, journal, thrust - load capacity and friction trade-offs.
Engineering Medium

Bolt Strength and Torque

Bolt grade vs proof load, with torque-to-tension relationships and friction effects.
Engineering Medium

Fatigue S-N Curve

Stress amplitude vs cycles to failure on a log-log plot - the basis of fatigue design.
Engineering Medium

Vibration Mode Shapes

A beam vibrates in characteristic mode shapes - the natural frequencies of a structure.
Engineering Simple

Mechanical Efficiency Cascade

Engine -> transmission -> drivetrain -> wheels - each loss compounds.
Engineering Medium

Beam Failure Modes

Yield, ultimate, buckling, fatigue - distinct failure modes with distinct design checks.

Electrical 14 live

AC/DC, three-phase, transformers, op-amps, filters, rectifiers.

Engineering Medium

Three-Phase Power Waveforms

Three sinusoids 120 degrees apart deliver constant total power - the global grid standard.
Engineering Medium

Transformer Flux Linkage

Primary winding creates flux in the core; secondary winding picks it up. Voltage ratio = turns ratio.
Engineering Medium

Op-Amp Configurations

Inverting, non-inverting, summing, differentiator, integrator - the building blocks of analog design.
Engineering Simple

RC Circuit Time Constant

Capacitor charges to 63% of supply voltage in one tau (R*C). Five tau is essentially full.
Engineering Medium

Filter Bode Plot

Magnitude and phase response across frequency for low-pass, high-pass, band-pass, band-stop.
Engineering Medium

Rectifier Types

Half-wave, full-wave, bridge - converting AC to DC with different ripple characteristics.
Engineering Simple

Logic Gates and Truth Tables

AND, OR, NAND, NOR, XOR, NOT - the universal building blocks of digital logic.
Engineering Medium

Thevenin and Norton Equivalents

Any linear circuit reduces to a single voltage source + resistor - or current source + parallel resistor.
Engineering Simple

PWM Duty Cycle

Square wave on/off ratio sets effective DC voltage - the basis of motor and LED control.
Engineering Medium

Transmission Line Power Loss

Power loss = I^2 R. High-voltage transmission moves power at low current to minimize losses.
Engineering Simple

AC vs DC: Where Each Wins

AC for distribution (transformers), DC for electronics and long-distance HVDC.
Engineering Simple

Capacitor Types Compared

Ceramic, electrolytic, film, tantalum - capacitance, voltage, ESR trade-offs.
Engineering Medium

Oscillator Circuit Topologies

Wien bridge, phase-shift, Colpitts, Hartley, crystal - generating sustained AC from DC.
Engineering Medium

Electric Motor Types

Brushed DC, brushless DC, induction, stepper, synchronous - torque-speed curves compared.

Civil 12 live

Trusses, beams, bending moments, foundations, soil mechanics.

Engineering Medium

Truss Force Analysis

Method of joints reveals tension and compression in every member of a triangulated truss.
Engineering Medium

Beam Bending Moment Diagram

Shear and moment diagrams for cantilever, simply-supported, and overhanging beams.
Engineering Simple

Foundation Types

Spread footing, mat, pile, drilled shaft - matched to soil conditions and load.
Engineering Medium

Beam Deflection Curves

Deflection profiles for common beam configurations and loadings.
Engineering Medium

Column Buckling (Euler)

Critical buckling load depends on length squared - long thin columns fail at small loads.
Engineering Simple

Soil Bearing Capacity

Allowable bearing pressure by soil type, with safety factors.
Engineering Simple

Concrete Strength Curve

Concrete reaches 70% of design strength in 7 days, 100% in 28 days, continues climbing for years.
Engineering Simple

Load Paths in a Building

Floor -> beam -> column -> foundation -> soil. The cascade of force from above to below.
Engineering Medium

Seismic Response Spectrum

Building acceleration vs natural period during a quake - tall buildings sway slowly, short buildings sharply.
Engineering Medium

Reinforced Concrete: Steel and Concrete

Concrete handles compression, steel handles tension - together they cover both.
Engineering Simple

Bridge Type Comparison

Beam, arch, truss, suspension, cable-stayed - span and load capacity by type.
Engineering Simple

Wind Load on Buildings

Pressure on a building face increases with the square of wind speed.
FAQ

Common questions about Engineering diagrams

Where can I get free animated engineering diagrams for my website?

Scrollchart is a free library of animated, embeddable diagrams. The Engineering section covers the most common concepts and frameworks in the field. Each diagram embeds with one line of HTML, no account required, no watermark.

How do I embed a free animated engineering diagram in WordPress?

Copy the embed snippet from the diagram page on Scrollchart and paste it into a custom HTML block in your WordPress editor. The diagram loads automatically and scroll-paints into view. No plugin or API key needed.

Is there a free library of animated engineering diagrams I can embed without coding?

Scrollchart provides ready-to-embed animated diagrams across engineering and 35 other categories. The embed is a single line of HTML that works in any CMS, including WordPress, Webflow, Ghost, Substack, and plain HTML pages.

Do Scrollchart engineering diagrams include explanatory text?

Yes. Each diagram ships with a tabbed explainer panel covering what the diagram shows, the research behind it, and how to interpret it. The text is served from scrollchart.com and rendered directly in your page's DOM so it is indexed by search engines.

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