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: Energy Conversion, Ohms, Amps, Watts, Work, 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: CAN-H, Arbitration, CAN Bus Protocol, End Field, Control Field, Node, Confirmation Field, and a whole lot more.

Connectors

Updated January, 2017 • 4 Materials

Welcome to the session on electrical connectors.

Learn about: Plug, Solder Joint, Solenoid Valve Connector, Optical Fiber, Solder Sucker, Weather Pack, Signal, and a whole lot more.

Diodes

Updated July, 2019 • 5 Materials

Learn to use your multimeter to test a diode.

Learn about: Multimeter, Electrical, Troubleshooting, LED, N-type, Flyback, NPN, 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: Electrocution, Burn, Electrically Insulated Footwear, Electrical Safety, Electrical PPE, Zero Energy, Flame Resistant, 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: Voltmeter, Ammeter, Short Circuit, DMM, Measurement, Electrical, Resistance 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: Mag Flow Meter, Flow, Faraday's Law of Electromagnetic Induction, Coriolis, MFMS, Mass Flow Rate, Rate, 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: Slow blow fuse, Blown Fuse, Short Circuit, Electrical Circuit Protection, Fast acting fuse, Fuse Test, Fuse, and a whole lot more.

Interpreting Electrical Schematics

Updated January, 2017 • 4 Materials

Schematics don't need to be confusing.

Learn about: Bus, Wire Crossing, Diagram, Tag, Draft, Standard, Electronics, 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: Open Circuit, Open Circuit Fault, Hydraulic Loader Fault, Short Circuit Fault, Ten Step Troubleshooting Process, System Diagnosis, Short Circuit, and a whole lot more.

Position Sensors

Updated May, 2021 • 14 Materials

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

Learn about: Diffuse, Hall, Through-Beam, Magnetostrictive, Photoelectric, Nominal Range, Magnetic, 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: Absolute Pressure, Pascal, Pressure, Manometer, Gauge, Variable Capacitance Sensor, psia, and a whole lot more.

Relays

Updated September, 2018 • 7 Materials

Relays are demystified in this interactive lesson.

Learn about: System, Single Pole Double Throw, Pole, Diagnostic, Throw, Schematic Symbol, Troubleshooting, 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: BJT, Schematic, Transistor, FET, Metal Oxide Varistor, Electrostatic Discharge, ESD, and a whole lot more.

Sensor Basics

Updated October, 2019 • 15 Materials

Sensors are everywhere in our electrical world.

Learn about: Sensor, Sourcing, Span, PNP, Transducer, Sinking, NPN, 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, Electrical Circuit, Series, KVL, Kirchoff's Voltage Law, Parallel, System Design, 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: Troubleshooting, Equalizer, Electrical, Starter, 12V, Battery, Alternator, 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: Single Pole, Toggle, Throw, Push Button, Switch, Double Pole, Normally Closed, and a whole lot more.

Temperature Sensors

Updated September, 2021 • 3 Materials

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

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

Variable Resistors

Updated January, 2017 • 5 Materials

Potentiometers vs.

Learn about: wiper, Potentiometer, Rheostat, AC temperature control, Variable Resistor, 2 lead, Resistance, 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: Analog Control, Digital Control, Voltage, Sin Wave, Pulse Width Modulation, Amps, PWM, 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: valve cover plate, hydraulics, poppet, pressure valves, two-port slip-in cartridge valves, active control, 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: Runaway Load, Load Holding, Safety, Adjusting a Counterbalance Valve, Motion Control, Raised Load, Counterbalance Valve, and a whole lot more.

Cross-Port Relief Valves

Updated February, 2020 • 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: Cross-Port Relief Valves, Flywheel Mass, Overpressure, Regenerative, Braking Valves, and a whole lot more.

Electro-Hydraulic Valves

Updated June, 2020 • 8 Materials

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

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

Fixed & Variable Displacement Pumps

Updated February, 2021 • 35 Materials

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

Learn about: On-Stroke, Balanced Vane Pump, Internal Gear Pump, Off-Stroke, Heat, Gerotor, Crescent Seal Pump, and a whole lot more.

Flow & Directional Control Valves

Updated September, 2021 • 36 Materials

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

Learn about: Response, Master-Slave Valves, Choke, Solenoid, Undercuts, Directional Control Valve, Infinite Position, 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: Static Pressure, Gravity, Surface Area, Dynamic Pressure, Fluidic Principles, Linear Force, Flow Viscosity, and a whole lot more.

Hydraulic Accessories

Updated September, 2021 • 14 Materials

This session covers a handful of hydraulic accessories.

Learn about: Filtration, Contamination, Accumulator, Fittings, Thread Identification Kit, Diameter, Hydraulic Hose Pressure Rating, and a whole lot more.

Hydraulic Actuators

Updated June, 2021 • 16 Materials

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

Learn about: Rod, Blind End, Semi-Rotary Actuators, Piston, TSTP, Linear Actuator, Motor, and a whole lot more.

Hydraulic Hazards & Safety

Updated January, 2017 • 3 Materials

Safe working habits around hydraulic systems save lives.

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

Hydraulic Schematic Symbols

Updated October, 2020 • 10 Materials

Schematic symbol reading is a vital troubleshooting skill.

Learn about: pilot line, shuttle valve, spring, adjustable, drain line, mechanical linkage, ball valve, 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, Hand Metering Unit, orbitrol, HMU, steering valve, hydraulic steering, and a whole lot more.

Hydrostatic (Closed Loop) Systems

Updated June, 2021 • 19 Materials

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

Learn about: Cross Port Relief, Charge Pump, Mobile, Direct Linkage, Cavitation, Closed Loop, Pressure Compensated Pump, 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: Orifice, Load Sense, Equilibrium, Pressure Differential, Load Sensing Compensator, LS, 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: Open Loop, Sectional Valve Bank, Closed Center, Closed Loop, Mobile, Open Center, and a whole lot more.

Parallel & Series Systems

Updated March, 2020 • 24 Materials

Parallel and Series circuits behave very differently.

Learn about: Restriction, Load, System Pressure, Parallel Circuits, Path of Least Resistance, Pressure Drops, Branch, 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 Controllers, Manual Pilot Control, Hydraulic Control, Control Stick, Pilot Valve, Joysticks, and a whole lot more.

Positive & Non-Positive Pumping

Updated August, 2020 • 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: Net Positive Suction Head, Void Bubbles, Positive Displacement, Air, Non Positive Displacement, Starved Inlet, Cavitation, and a whole lot more.

Pressure & Flow

Updated February, 2020 • 28 Materials

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

Learn about: Hydraulic Flow, Slippage, Velocity, Gauge, Fluid Velocity, Hydraulic Pressure, Flow Rate, 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: Normally Closed, Pressure Reducing Valve, Pressure, Downstream Pressure, Pilot Operated, Direct Acting, and a whole lot more.

Pressure Relief Valves

Updated March, 2021 • 31 Materials

Jump into relief valves with this colorful session.

Learn about: normally closed, normally open, cartridge, pressure override, cracking pressure, direct acting relief, spring, 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: Pressure, Sub-Circuit, Hydraulic, Valve, Order, Training, Set Pressure, 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: Hit or Miss, Ten Step Troubleshooting Process, Guess and Check, TSTP, Downtime, Failure, easy-to-check order, and a whole lot more.

Unloading Valves

Updated January, 2020 • 7 Materials

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

Learn about: Pressure, Energy Saving, Unloading Valve, Restriction, Fast Approach Slow Feed Circuit, Pressure Pump , Balanced Relief Valve, and a whole lot more.

20 Machinery Sessions

Aerial Work Platforms

Updated April, 2020 • 1 Material

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: Mobile Elevated Work Platform, MEWP, AWP, Aerial Work Platform, Scissor Lift Hydraulics, Slab Scissor Lift, 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: Atlas Copco, Drill, Hydraulic Circuit, Simulation, Diverter, Animation, Blast Hole Drill, 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 Mixer, Cement Plant, Cement, Guillotine Gate, and a whole lot more.

Civic Machines

Updated October, 2021 • 2 Materials

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Learn about: , and a whole lot more.

Coal Stacker-Reclaimer

Updated July, 2020 • 2 Materials

Coal stacker-reclaimers are used to either receive coal or to stockpile it.

Learn about: Coal, Stacker, Reclaimer, Mining Equipment, Hoist Circuit, 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: injector traction, Coil tubing injector, hydraulic faults , coiled tubing, chain tension, and a whole lot more.

Concrete Pump

Updated November, 2019 • 4 Materials

This session is all about truck-mounted concrete pumps.

Learn about: duplex plunger pump, truck, cement, concrete, 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, Tilt, Dozer, Hydraulics, D11R, Caterpillar, Cat, 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: Boom Circuit, pump regulator, Bucket Circuit, heavy machinery, Electro-hydraulic control valve, solenoid valves, EHC Valve, 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: Implements, Brakes, Steering, 24M Series, Cat Grader Schematics, Caterpillar Hydraulics, 24H Series, and a whole lot more.

Hydraulic Governor

Updated April, 2018 • 2 Materials

The governor is a critical component in hydroelectric dams.

Learn about: hydroelectric, electricity, governor, generation, power, engine, regulate, 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: Bucket, Steering, Loader Schematic, Auxiliary, Mobile Equipment Hydraulic, Front-End Loader, Lift, 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: Hydraulic Lube Systems, Bearings, Lubricant, Simulation, and a whole lot more.

Mining Haul Trucks

Updated July, 2021 • 14 Materials

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

Learn about: 3D Video, Liebherr, Komatsu, Caterpillar, Live Schematic Simulation, 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: Mobile pneumatics, piston compressor, air governor, 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, Dust, Air Entrainment, Cement Metering Valve, Dry Blending, Mixing Head, Clumping, and a whole lot more.

Oilfield Pumping

Updated June, 2018 • 6 Materials

Reciprocating plunger pumps are very common in oilfield pumping.

Learn about: Suction Valve, Maintenance, Discharge Valve, Re-packing, Power End, Triplex, Reciprocating Plunger Pump, and a whole lot more.

Paper Mill

Updated October, 2021 • 13 Materials

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

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

Pulp Mill

Updated October, 2021 • 12 Materials

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

Learn about: logic, Pulp and Paper, low pressure standby, Pulp bale press, Car, Dumper, pulp and paper, and a whole lot more.

Sawmill

Updated August, 2020 • 4 Materials

Sawmills are full of specialized hydraulic and electrical equipment.

Learn about: Belt, Log, Hydraulic, Sawmill, Conveyor, Quadrant Feeder, and a whole lot more.

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