Session Listing

Here is a complete list of all the subjects we cover.

20 Electrical Sessions

Basic Electrical Concepts

Updated March, 2018 • 4 Materials

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

Learn about: Amps, Ohm's Law, Current, Voltage, Power, Watts, Ohms, and a whole lot more.

CAN Bus

Updated December, 2018 • 5 Materials

Ready to learn about the CAN Bus Protocol.

Learn about: Transceiver, Node, NRZI, Message Frame, Controller, Non-Return to Zero Inverted, Check Field, and a whole lot more.

Connectors

Updated January, 2017 • 4 Materials

Welcome to the session on electrical connectors.

Learn about: Pin/Plug, Solder, Coaxial, Power, Weather Pack, Female, Plug, and a whole lot more.

Diodes

Updated July, 2019 • 5 Materials

Learn to use your multimeter to test a diode.

Learn about: N-type, NPN, Light Emitting Diodes, Bias, Circuit, Flyback, LED, 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: Zero Energy, Static Dissipative Footwear, Burn, Electrically Insulated Footwear, Electrical PPE, 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: Electrician, Voltmeter, Short Circuit, Test For Blown Fuse, Digital Multimeter, Fluke Meter, Measurement, 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: Electromagnetic Flow Meter, Density, , Flow, Faraday's Law of Electromagnetic Induction, Conductive, Magnetic Field, 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: Fuse, Fast acting fuse, Blown Fuse, Digital Multimeter, Slow blow fuse, Testing Fuses, Inspecting Fuses, and a whole lot more.

Interpreting Electrical Schematics

Updated January, 2017 • 4 Materials

Schematics don't need to be confusing.

Learn about: Connection, Bus, Standard, Tag, Off-Page, Signal Ground, Electrician, 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 Fault, Short Circuit, Electrician, Skill, Troubleshooting, Ten Step Troubleshooting Process, Open Circuit, and a whole lot more.

Position Sensors

Updated July, 2018 • 9 Materials

Inductive, Capacitive, Photoelectric and Ultrasonic proximity sensors are covered in this session.

Learn about: Sensor, Capacitive, Diffuse, Retroreflective, Inductive, Proximity, Through-Beam, 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: psig, Differential, Absolute Pressure, Indicator Fluids, Manometer, Pascal, Strain Gauges, and a whole lot more.

Relays

Updated September, 2018 • 7 Materials

Relays are demystified in this interactive lesson.

Learn about: Schematic Symbol, Single Pole Double Throw, Throw, Relay, Diagnostic, Troubleshooting, Electrical Circuit, 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: Metal Oxide Varistor, FET, Semiconductor, Troubleshooting, Maintenance, Component, Schematic, and a whole lot more.

Sensor Basics

Updated October, 2019 • 15 Materials

Sensors are everywhere in our electrical world.

Learn about: Normalizing, Sinking, Sensor, Lower Range Value, Calibration, PNP, Span, 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, System Design, KVL, Series, Troubleshooting, Electrical Circuit, Kirchoff's Voltage Law, 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: Electrical, 24V, Starter, Troubleshooting, Equalizer, 12V, Alternator, and a whole lot more.

Switches

Updated July, 2019 • 13 Materials

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

Learn about: Switch, On-Off-On, Three Way Switching, Throw, Normally Closed, Rating, Normally Open, and a whole lot more.

Variable Resistors

Updated January, 2017 • 5 Materials

Potentiometers vs.

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

Waveforms & Signal Generation

Updated October, 2018 • 8 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: Hertz, Amplitude, ECM, Digital Control, Hz, AC, Electrical Current, and a whole lot more.

23 Hydraulics Sessions

Cartridge Valves

Updated December, 2018 • 4 Materials

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

Learn about: relief valves, two-port slip-in cartridge valves, hydraulics, valve cover plate, passive control, logic valve circuits, throttle valves, and a whole lot more.

Counterbalance Valves

Updated September, 2019 • 7 Materials

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

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

Cross-Port Relief Valves

Updated January, 2017 • 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: Braking Valves, Regenerative, Cross-Port Relief Valves, Flywheel Mass, Overpressure, and a whole lot more.

Electro-Hydraulic Valves

Updated April, 2019 • 6 Materials

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

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

Fixed & Variable Displacement Pumps

Updated September, 2019 • 30 Materials

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

Learn about: Unbalanced Vane Pump, Driven Gear, Internal Gear Pump, Inlet, Balanced Vane Pump, Cam Ring, Heat, and a whole lot more.

Flow & Directional Control Valves

Updated September, 2019 • 30 Materials

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

Learn about: Tandem, Response, Operator, Main Valve Section, Troubleshooting, Pilot, Two Section Valves, and a whole lot more.

Fluid Power Basics

Updated September, 2018 • 8 Materials

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

Learn about: FPA Triangle, Force, Dynamic Pressure, Gallons Per Minute, Energy, Newtons, Flow Viscosity, and a whole lot more.

Hydraulic Accessories

Updated September, 2019 • 11 Materials

This session covers a handful of hydraulic accessories.

Learn about: Filters, Diameter, Sleeve, Bladder, Piston, NPT, Precharge, and a whole lot more.

Hydraulic Actuators

Updated September, 2019 • 13 Materials

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

Learn about: Blind End, TSTP, Cylinder, Rotary Actuator, Rod End, Motor, Troubleshooting, and a whole lot more.

Hydraulic Hazards & Safety

Updated January, 2017 • 3 Materials

Safe working habits around hydraulic systems save lives.

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

Hydraulic Schematic Symbols

Updated August, 2019 • 10 Materials

Schematic symbol reading is a vital troubleshooting skill.

Learn about: mechanical linkage, hydraulic pilot, rotation, reservoir, cylinder, tank, cartridge valve, and a whole lot more.

Hydraulic Steering

Updated September, 2019 • 7 Materials

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

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

Hydrostatic (Closed Loop) Systems

Updated October, 2019 • 17 Materials

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

Learn about: Cavitation, Charge Pump, Direct Linkage, Hydrostatic Loop, Closed Loop, Heat, Hot Oil Shuttle Valve, and a whole lot more.

Load Sensing Pumps

Updated September, 2019 • 18 Materials

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

Learn about: Flow Control, Orifice, Pressure Differential, Load Sensing Compensator, Equilibrium, Piston Pump, Margin Pressure, and a whole lot more.

Open & Closed Center Systems

Updated September, 2019 • 10 Materials

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

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

Parallel & Series Systems

Updated September, 2019 • 20 Materials

Parallel and Series circuits behave very differently.

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

Positive & Non-Positive Pumping

Updated May, 2018 • 16 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: Flooded Inlet, Void Bubbles, Positive Pressure, Positive Displacement, Air, Breather, Partial Vacuum Pressure, and a whole lot more.

Pressure & Flow

Updated October, 2019 • 23 Materials

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

Learn about: Slippage, FPA Triangle, Hydraulic Pressure, Fluid Velocity, Hydraulic Flow, Velocity, Flow Rate, and a whole lot more.

Pressure Reducing Valves

Updated September, 2019 • 7 Materials

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

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

Pressure Relief Valves

Updated September, 2019 • 27 Materials

Jump into relief valves with this colorful session.

Learn about: normally closed, direct acting relief, balanced relief valve, spring, setting pressure, spool, counterbalance valves, and a whole lot more.

Sequence Valves

Updated August, 2019 • 5 Materials

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

Learn about: Set Pressure, Sub-Circuit, Pressure, Hydraulic, Sequence, Valve, Training, 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: Downtime, Failure, Guess and Check, Hit or Miss, easy-to-check order, Ten Step Troubleshooting Process, TSTP, and a whole lot more.

Unloading Valves

Updated September, 2019 • 7 Materials

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

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

16 Machinery Sessions

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: Holdback, Animation, Atlas Copco, Brakes, Propel, Drill, Simulation, and a whole lot more.

Cat Excavators

Updated September, 2018 • 3 Materials

Familiarize yourself with the inner workings of excavator hydraulic systems that are specific to Caterpillar.

Learn about: Track Drive, 385C, Bucket Circuit, Swing Circuit, CAT, Excavator, Boom Circuit, and a whole lot more.

Cat Haul Trucks

Updated May, 2019 • 2 Materials

Explore Caterpillar haul trucks with a couple animated circuits in this session.

Learn about: Hoist Circuit, Haul Truck, Simulations, Steering Circuit, and a whole lot more.

Coal Stacker-Reclaimer

Updated June, 2018 • 2 Materials

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

Learn about: Hoist Circuit, Coal, Mining Equipment, Stacker, Reclaimer, and a whole lot more.

Coiled Tubing Units

Updated September, 2019 • 4 Materials

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

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

Deere-Hitachi Excavators & Shovels

Updated July, 2018 • 25 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: solenoid valves, pump controller, heavy machinery, Electro-hydraulic control valve, EHC Valve, pump regulator, and a whole lot more.

Hydraulic Governor

Updated April, 2018 • 2 Materials

The governor is a critical component in hydroelectric dams.

Learn about: generation, dam, hydraulic, regulate, governor, engine, electricity, and a whole lot more.

Komatsu Haul Trucks

Updated September, 2018 • 7 Materials

Check this session out for a bundle of 830E and 930E Live Schematics.

Learn about: Split Spool Section, Inlet Section, Hoist, Live Schematic, Hydraulic, 930E, Brakes, and a whole lot more.

Loaders

Updated October, 2019 • 8 Materials

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

Learn about: Bucket, Wheel Loader, Boom, Auxiliary, Steering, Lift, Mobile Equipment Hydraulic, 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: Simulation, Hydraulic Lube Systems, Lubricant, Bearings, 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: Mixing Head, Cement Metering Valve, Dry Blending, Dust, Air Entrainment, Cementing, Clumping, and a whole lot more.

Oilfield Pumping

Updated June, 2018 • 6 Materials

Reciprocating plunger pumps are very common in oilfield pumping.

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

Pulp Bale Presses

Updated April, 2018 • 4 Materials

Compacting sheet pulp or loose pulp to a bale size that is optimal for shipping requires a massive hydraulic press.

Learn about: pulp and paper, Pulp bale press, and a whole lot more.

Rail Car Dumper

Updated June, 2018 • 1 Material

Learn through play about a pulp-chip rail car dumper.

Learn about: logic, Car, slip-in cartridge, Dumper, low pressure standby, Pulp and Paper, Rail, and a whole lot more.

Sawmill

Updated September, 2019 • 2 Materials

Sawmills are full of specialized hydraulic and electrical equipment.

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

Truck Dumper

Updated November, 2018 • 1 Material

Step through the operational stages as a truck dumper runs in schematic form.

Learn about: Valve Solenoid Sequence Chart, Truck Dumper, and a whole lot more.

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