Session Listing

A complete list of all the subjects we cover.

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21 Electrical Sessions

Basic Electrical Concepts

Updated May, 2021 • 4 Materials

When studying electrical circuits, you need to start with the fundamentals: Voltage, Current, and Resistance.

Learn about: Voltage, Amps, Watts, Energy Conversion, Resistance, Power, Ohm's Law, and a whole lot more.

CAN Bus

Updated December, 2018 • 5 Materials

Ready to learn about the CAN Bus Protocol.

Learn about: Message Identifier, Node, Acknowledge Field, Transceiver, Network, CAN Bus Protocol, Standard CAN, and a whole lot more.

Connectors

Updated January, 2017 • 4 Materials

Welcome to the session on electrical connectors.

Learn about: Female, Solenoid Valve Connector, Optical Fiber, Plug, Power, Maintenance, Jack, and a whole lot more.

Diodes

Updated July, 2019 • 5 Materials

Learn to use your multimeter to test a diode.

Learn about: LED, Flyback, Light Emitting Diodes, NPN, Semiconductor, Troubleshooting, Electrical, and a whole lot more.

Electrical Hazards & Safety

Updated March, 2018 • 3 Materials

Even low voltage systems can seriously injure or even kill.

Learn about: Flame Resistant, Burn, Zero Energy, Electrically Insulated Footwear, Electrocution, Hazards, , and a whole lot more.

Electrical Measurements

Updated January, 2017 • 4 Materials

Digital Multimeters (DMM) are one of the most powerful tools available to electricians.

Learn about: DMM, Electrician, Electrical, Voltmeter, Test For Blown Fuse, Digital Multimeter, Continuity Test, and a whole lot more.

Flow Sensors

Updated July, 2018 • 3 Materials

Both the electromagnetic flow meter and the mass flow meter measure flow without adding a turbine or a restriction to the mix.

Learn about: Magnetic Field, Faraday's Law of Electromagnetic Induction, MFMS, Conductive, Mag Flow Meter, Electrodes, Flow, and a whole lot more.

Fuses & Circuit Breakers

Updated January, 2017 • 2 Materials

This mini-session gives you a quick overview of these critical circuit protection devices.

Learn about: Circuit breaker, Fuse, Electrical Circuit Protection, Fuse Test, Fast acting fuse, Digital Multimeter, Testing Fuses, and a whole lot more.

Interpreting Electrical Schematics

Updated January, 2017 • 4 Materials

Schematics don't need to be confusing.

Learn about: Electrical Schematic, Diagram, Tag, Troubleshooting, Electrician, NEMA, Connection, and a whole lot more.

Open & Short Circuit Faults

Updated April, 2019 • 7 Materials

In this session, you'll apply electrical principles to troubleshooting.

Learn about: Short Circuit, Hydraulic Loader Fault, Electrician, Meter Reading, Digital Multimeter, Short Circuit Fault, Open Circuit Fault, and a whole lot more.

Position Sensors

Updated January, 2022 • 22 Materials

Magnetic, Hall Effect, Inductive, Capacitive, Photoelectric, Magnetostrictive and Ultrasonic proximity, speed and position sensors are covered in this session.

Learn about: Ultrasonic, Diffuse, Capacitive, Hall, Thru-Beam, Photoelectric, Proximity, and a whole lot more.

Pressure Sensors

Updated July, 2018 • 10 Materials

Pressure sensing can be done with one of several kinds of technologies.

Learn about: Pressure Sensor, Piezoelectric Sensors, Vacuum, Gauge, Variable Capacitance Sensor, Wheatstone Bridge, Indicator Fluids, and a whole lot more.

Relays

Updated September, 2018 • 7 Materials

Relays are demystified in this interactive lesson.

Learn about: System, Troubleshooting, Electrical Circuit, Throw, Switch, Diagnostic, Single Pole Double Throw, and a whole lot more.

Semiconductors

Updated January, 2017 • 3 Materials

Transistors are the focus of this session, plus you'll learn how to prevent damage to these sensitive components.

Learn about: ESD, Maintenance, FET, Schematic, Semiconductor, Electronics, Transistor, and a whole lot more.

Sensor Basics

Updated October, 2019 • 15 Materials

Sensors are everywhere in our electrical world.

Learn about: Sinking, Transmitter, Sensor, PNP, Transducer, Zero, Range, and a whole lot more.

Series & Parallel Circuit Basics

Updated August, 2019 • 9 Materials

Series and parallel circuits are at the heart of every electrical system.

Learn about: Branch, Kirchoff's Voltage Law, Electrician, Troubleshooting, Electrical Circuit, KVL, Series, and a whole lot more.

Starting & Charging Systems

Updated January, 2017 • 3 Materials

Dig into mobile electrical circuits with this session on starting and charging systems.

Learn about: 24V, 12V, Equalizer, Starter, Battery, Troubleshooting, Electrical, and a whole lot more.

Switches

Updated March, 2021 • 14 Materials

Switches are one of most common control elements used in electrical circuit design.

Learn about: Normally Open, Single Pole, Double Pole, N.C., Push Button, Control, 3 Way Switching, and a whole lot more.

Temperature Sensors

Updated April, 2022 • 6 Materials

At the most basic level, temperature sensors tell you something really simple: hot, or not.

Learn about: temperature measuring device, temperature, resistance temperature detector, temperature sensor, temperature basics, thermistor, rtd, and a whole lot more.

Variable Resistors

Updated January, 2017 • 5 Materials

Potentiometers vs.

Learn about: Rheostat, wiper, AC temperature control, 2 lead, Variable Resistor, Resistance, Potentiometer, and a whole lot more.

Waveforms & Signal Generation

Updated February, 2021 • 9 Materials

Direct current is common in low voltage systems, but as soon as you start working with high voltage, you'll need to know about alternating current.

Learn about: Control Voltage, Resistance, Sin Wave, DC, Frequency, Amps, Amplitude, and a whole lot more.

24 Hydraulics Sessions

Cartridge Valves

Updated July, 2020 • 5 Materials

In this session you'll find an in-depth introduction to slip-in cartridge valves.

Learn about: throttle valves, logic valve circuits, check valves, pressure valves, damping valves, poppet, relief valves, and a whole lot more.

Counterbalance Valves

Updated August, 2021 • 11 Materials

Counterbalance valves allow raised loads to be lowered safely, with a minimum of wasted energy.

Learn about: Adjusting a Counterbalance Valve, Motion Control, Safety, Raised Load, Runaway Load, Load Holding, Counterbalance Valve, and a whole lot more.

Cross-Port Relief Valves

Updated May, 2022 • 5 Materials

Cross-port relief valves expand on the standard relief valve to control otherwise destructive pressures created by external forces acting against an actuator.

Learn about: Flywheel Mass, Cross-Port Relief Valves, Braking Valves, Regenerative, Overpressure, and a whole lot more.

Electro-Hydraulic Valves

Updated February, 2022 • 11 Materials

Enter the world of electro-hydraulic valves in this session.

Learn about: servo valves, proportional valves, electro-hydraulic valves, moog, and a whole lot more.

Fixed & Variable Displacement Pumps

Updated May, 2022 • 35 Materials

If you have questions about hydraulic pumps, this is the session for you.

Learn about: Swash Plate, LPM, Internal Gear Pump, Pressure Compensated Pump, Outlet, Variable Displacement, Vane Pump, and a whole lot more.

Flow & Directional Control Valves

Updated May, 2022 • 40 Materials

This session is absolutely packed with fun lessons and interactive animations.

Learn about: Undercuts, Three Section Valves, Solenoid, DCV, Main Valve Section, Two Section Valves, Port, and a whole lot more.

Fluid Power Basics

Updated May, 2021 • 8 Materials

If you're looking for the starting point in your study of hydraulics, this is it.

Learn about: Force = Pressure x Area, Static Pressure, Force, Litres Per Minute, Dynamic Pressure, Newtons, FPA Triangle, and a whole lot more.

Hydraulic Accessories

Updated September, 2021 • 14 Materials

This session covers a handful of hydraulic accessories.

Learn about: Crest, Minimum Bend Radius, Brackets, Bladder, Filters, ISO 4406, Poppet, and a whole lot more.

Hydraulic Actuators

Updated May, 2022 • 16 Materials

Linear and rotary actuators are the muscles of a hydraulic system.

Learn about: Blind End, Rod End, Cylinder, Semi-Rotary Actuators, Gland, Linear Actuator, Seal, and a whole lot more.

Hydraulic Hazards & Safety

Updated May, 2022 • 3 Materials

Safe working habits around hydraulic systems save lives.

Learn about: Pinch Points, System Adjustment Hazards, Unexpected Motion, Safety, Heat, Hose and Fitting Failure, Zero Energy State, and a whole lot more.

Hydraulic Schematic Symbols

Updated October, 2020 • 10 Materials

Schematic symbol reading is a vital troubleshooting skill.

Learn about: logic valve, manifold line, spring, Schematic symbols, cylinder, variable, reservoir, and a whole lot more.

Hydraulic Steering

Updated September, 2019 • 6 Materials

This session will go into detail on hydraulic power steering and how it works.

Learn about: power steering, orbitrol, hydraulic steering, Hand Metering Unit, HMU, steering valve, and a whole lot more.

Hydrostatic (Closed Loop) Systems

Updated May, 2022 • 21 Materials

Get right into the design of closed loop systems with colourful graphics and detailed drawings.

Learn about: Pressure Compensated Pump, Hydrostatic Loop, Direct Linkage, Charge Pump, Reversing Flow, Hot Loop, Closed Loop, and a whole lot more.

Load Sensing Pumps

Updated March, 2021 • 18 Materials

This animated and interactive session takes the mystery out of load sense.

Learn about: Pressure Differential, Hunting, Piston Pump, Load Sense, LS, Orifice, Margin Pressure, and a whole lot more.

Open & Closed Center Systems

Updated July, 2020 • 13 Materials

This session tackles the differences and similarities between open and closed center systems.

Learn about: Mobile, Closed Loop, Closed Center, Open Loop, Sectional Valve Bank, Open Center, and a whole lot more.

Parallel & Series Systems

Updated March, 2020 • 24 Materials

Parallel and Series circuits behave very differently.

Learn about: Series Circuits, Pressure Drops, Branch, Path of Least Resistance, Load, System Pressure, Parallel Circuits, and a whole lot more.

Pilot Controllers

Updated April, 2020 • 3 Materials

Whether you're using a joystick to raise or swing a boom, or floor pedals for forward or reverse track motion, you're interacting with a pilot controller.

Learn about: Pilot Valve, Control Stick, Manual Pilot Control, Joysticks, Pilot Controllers, Hydraulic Control, and a whole lot more.

Positive & Non-Positive Pumping

Updated May, 2022 • 20 Materials

Positive and Non-Positive Pumping tackles the differences between the two types of systems, and the design and maintenance needs of each.

Learn about: Positive Pressure, Positive Displacement, Non Positive Displacement, Breather, Starved Inlet, Charge Pump, Mechanical Erosion, and a whole lot more.

Pressure & Flow

Updated May, 2022 • 28 Materials

This session gets you started with a solid foundation on pressure and flow basics.

Learn about: Resistance, Velocity, Slippage, Positive Displacement Pump, Fluid Velocity, Hydraulic Pressure, FPA Triangle, and a whole lot more.

Pressure Reducing Valves

Updated June, 2020 • 7 Materials

Pressure reducing valves function very differently than relief valves, even though their schematic symbols look very similar.

Learn about: Pressure Reducing Valve, Direct Acting, Pilot Operated, Normally Closed, Downstream Pressure, Pressure, and a whole lot more.

Pressure Relief Valves

Updated March, 2021 • 31 Materials

Jump into relief valves with this colorful session.

Learn about: spool, limit maximum system pressure, pressure spikes, cartridge, relief valves, pilot, balanced relief valve, and a whole lot more.

Sequence Valves

Updated December, 2020 • 5 Materials

Sequence valves are used on many machines to coordinate hydraulic functions.

Learn about: Sequence, Sub-Circuit, Hydraulic, Set Pressure, Training, Valve, Order, and a whole lot more.

Troubleshooting Processes

Updated January, 2017 • 7 Materials

Troubleshooting a hydraulic system can be a demanding and tricky task.

Learn about: Guess and Check, Ten Step Troubleshooting Process, Failure, easy-to-check order, Hit or Miss, Downtime, TSTP, and a whole lot more.

Unloading Valves

Updated May, 2022 • 7 Materials

Unloading valves are often confused with relief valves, but they play a unique role in hydraulic systems.

Learn about: Pressure, Fast Approach Slow Feed Circuit, High-Low Circuit, Energy Saving, Unloading Valve, Efficient, Volume Pump, and a whole lot more.

22 Machinery Sessions

Aerial Work Platforms

Updated January, 2022 • 2 Materials

The world of the aerial work platform (AWP) or the mobile elevated work platform (MEWP) includes a group of machines that are very popular in construction and building maintenance.

Learn about: AWP, MEWP, Scissor Lift Hydraulics, Slab Scissor Lift, Mobile Elevated Work Platform, Aerial Work Platform, and a whole lot more.

Blast Hole Drills

Updated March, 2018 • 3 Materials

This session gets you right into the hydraulic circuit sections in a common blast hole drill.

Learn about: Blast Hole Drill, Simulation, Animation, Brakes, Diverter, Drill, Holdback, and a whole lot more.

Cement Plants

Updated August, 2021 • 2 Materials

In this session you can learn about the inner workings for the hydraulics of a cement plant.

Learn about: Cement Plant, Cement Mixer, Guillotine Gate, Cement, and a whole lot more.

Civic Machines

Updated October, 2021 • 2 Materials

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Learn about: , and a whole lot more.

Coiled Tubing Units

Updated October, 2021 • 21 Materials

This session is specific to coiled tubing units and problems related to injector chain tension and traction.

Learn about: hydraulic faults , Coil tubing injector, chain tension, injector traction, coiled tubing, and a whole lot more.

Concrete Pump

Updated November, 2019 • 4 Materials

This session is all about truck-mounted concrete pumps.

Learn about: cement, concrete, duplex plunger pump, truck, and a whole lot more.

Dozers

Updated August, 2021 • 5 Materials

Explore a dozer in this session with one of our Live Schematic simulations, featuring a side-by-side view of the schematic and a cutaway graphic.

Learn about: Lift, Dozer, Caterpillar, Cat, D11R, Hydraulics, Tilt, and a whole lot more.

Excavators & Shovels

Updated June, 2021 • 26 Materials

In the world of excavators & shovels, there are a lot of specialized hydraulic components used to solve problems specific to such large mobile machinery.

Learn about: Track Drive, Excavator, pump regulator, Electro-hydraulic control valve, Caterpillar, Swing Circuit, CAT, and a whole lot more.

Graders

Updated December, 2020 • 13 Materials

Enjoy this collection of videos and simulations about Graders, such as the Caterpillar H Series and the M Series.

Learn about: Cat Grader Schematics, Brakes, Steering, Implements, 24H Series, 24M Series, Caterpillar Hydraulics, and a whole lot more.

Hydraulic Governors

Updated January, 2022 • 3 Materials

The governor is a critical component in hydroelectric dams.

Learn about: generation, hydroelectric, electricity, regulate, hydraulic, power, governor, and a whole lot more.

Loaders

Updated February, 2020 • 9 Materials

Get to know your way around the hydraulics on a loader with the advanced simulations in this sessions.

Learn about: Tilt, Steering, Bucket, Wheel Loader, Auxiliary, Boom, Front-End Loader, and a whole lot more.

Lube Systems

Updated September, 2019 • 2 Materials

Keeping bearings and gears lubricated in a production environment often involves a pumped lubricant.

Learn about: Bearings, Hydraulic Lube Systems, Simulation, Lubricant, and a whole lot more.

Mining Haul Trucks

Updated March, 2022 • 15 Materials

Haul trucks from three major manufacturers are covered in this session.

Learn about: Komatsu, Liebherr, Live Schematic Simulation, Caterpillar, 3D Video, and a whole lot more.

Mobile Equipment Air Compressors

Updated December, 2019 • 4 Materials

This session is an introduction to some mobile pneumatic system basics.

Learn about: air governor, Mobile pneumatics, piston compressor, and a whole lot more.

Oilfield Cementing

Updated May, 2018 • 1 Material

Oilfield cementing has driven industrial process technology to produce many specialized components, which you'll learn about in this session.

Learn about: Slurry, Dry Blending, Diffuser, Cement Metering Valve, Mixing Head, Dust, Cementing, and a whole lot more.

Oilfield Pumping

Updated June, 2018 • 6 Materials

Reciprocating plunger pumps are very common in oilfield pumping.

Learn about: Reciprocating Plunger Pump, High Pressure Pumping, Discharge Valve, Maintenance, Quintuplex, Triplex, Positive Displacement Pumping, and a whole lot more.

Oriented Strand Board

Updated May, 2022 • 6 Materials

An oriented strand board (OSB) mill produces a structural panel from strands cut primarily from small diameter aspen or poplar logs.

Learn about: , and a whole lot more.

Paper Mill

Updated October, 2021 • 14 Materials

Paper machines depend on hydraulic systems for precise forces, fast motions, and careful load handling.

Learn about: Roll Eject, Winding, Calender, Paper Machine, Cradle, Reeling, Nip Guard, and a whole lot more.

Ports & Terminals

Updated February, 2022 • 4 Materials

In this session, you'll see the boom hoisting circuit of a coal stacker/reclaimer come to life in a Live Schematic.

Learn about: , and a whole lot more.

Pulp Mill

Updated March, 2022 • 14 Materials

A pulp mill has the equivalent horsepower of a dozen freight trains of machinery running inside.

Learn about: Dumper, slip-in cartridge, Valve Solenoid Sequence Chart, wire drive, low pressure standby, pulp and paper, Truck Dumper, and a whole lot more.