Session Listing

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

19 Electrical Sessions

Basic Electrical Concepts

Updated January, 2017 • 6 Materials

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

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

Connectors

Updated January, 2017 • 4 Materials

Welcome to the session on electrical connectors.

Learn about: Solenoid Valve Connector, Maintenance, Pin/Plug, Solder, Coaxial, Male, Data, and a whole lot more.

Diodes

Updated January, 2017 • 4 Materials

Learn to use your multimeter to test a diode.

Learn about: P-type, Semiconductor, Rectifier, N-type, LED, Flyback, Troubleshooting, 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, Static Dissipative Footwear, Electrical PPE, Burn, Electrocution, Electrical Safety, and a whole lot more.

Electrical Measurements

Updated January, 2017 • 8 Materials

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

Learn about: Voltmeter, Digital Multimeter, Electrician, Fluke Meter, Short Circuit, Electrical, Voltage 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: Density, Magnetic Field, Flow, Electrodes, MFMS, Electromagnetic Flow Meter, 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: Short Circuit, Fuse, Fuse Test, Inspecting Fuses, Digital Multimeter, Electrical Circuit Protection, Fast acting fuse, and a whole lot more.

Interpreting Electrical Schematics

Updated January, 2017 • 4 Materials

Schematics don't need to be confusing.

Learn about: Electrical Schematic, Troubleshooting, Wire Crossing, Earth Ground, IES, Symbol, Signal Ground, and a whole lot more.

Open & Short Circuit Faults

Updated January, 2017 • 6 Materials

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

Learn about: Troubleshooting, Electrician, System Diagnosis, Digital Multimeter, Electrical Fault, Open Circuit Fault, Short 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, Retroreflective, Thru-Beam, Diffuse, Inductive, Capacitive, Nominal Range, 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: Differential, Pascal, Pressure, Pressure Sensor, Indicator Fluids, Gauge Pressure, Vacuum, and a whole lot more.

Relays

Updated September, 2018 • 7 Materials

Relays are demystified in this interactive lesson.

Learn about: Diagnostic, Troubleshooting, Schematic Symbol, Throw, Switch, Electrical Circuit, System, 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, Metal Oxide Varistor, Maintenance, ESD, JFET, FET, Schematic, and a whole lot more.

Sensor Basics

Updated August, 2018 • 14 Materials

Sensors are everywhere in our electrical world.

Learn about: Range, Sourcing, Calibration, Zero, Sinking, Live Zero, NPN, and a whole lot more.

Series & Parallel Circuit Basics

Updated May, 2018 • 8 Materials

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

Learn about: Kirchoff's Voltage Law, KVL, Electrical Circuit, System Design, Branch, Troubleshooting, 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: Starter, Alternator, Battery, Troubleshooting, 24V, 12V, Equalizer, and a whole lot more.

Switches

Updated January, 2017 • 12 Materials

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

Learn about: N.C., Throw, 3 Way Switching, On-Off-On, Control, Pole, Three Way Switching, and a whole lot more.

Variable Resistors

Updated January, 2017 • 5 Materials

Potentiometers vs.

Learn about: AC temperature control, Variable Resistor, Rheostat, Potentiometer, wiper, Resistance, 2 lead, 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: Direct Current, PWM, Analog Control, Amps, Duty Cycle, Hertz, Hz, and a whole lot more.

22 Hydraulics Sessions

Counterbalance Valves

Updated January, 2017 • 5 Materials

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

Learn about: Counterbalance Valve, Adjusting a Counterbalance Valve, Motion Control, Safety, Load Holding, Raised Load, Runaway Load, 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: Flywheel Mass, Overpressure, Regenerative, Cross-Port Relief Valves, Braking Valves, and a whole lot more.

Electro-Hydraulic Valves

Updated July, 2018 • 5 Materials

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

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

Fixed & Variable Displacement Pumps

Updated June, 2018 • 26 Materials

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

Learn about: Compensator, Main Gear, Vanes, Rotor, LPM, Pressure Differential, Unbalanced Vane Pump, and a whole lot more.

Flow & Directional Control Valves

Updated October, 2018 • 19 Materials

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

Learn about: Infinite Position, Troubleshooting, Directional Control Valve, Tandem, Valve Stack, Port, Response, 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: Power, Force = Pressure x Area, Flow Viscosity, Flow, Rotational Force, Pascal's Law, gpm, and a whole lot more.

Hydraulic Accessories

Updated July, 2018 • 10 Materials

This session covers a handful of hydraulic accessories.

Learn about: Crest, Thread Size Chart, Poppet, BSPP, Complete Threads, Calipers, NPTF, and a whole lot more.

Hydraulic Actuators

Updated July, 2018 • 10 Materials

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

Learn about: Piston, TSTP, Troubleshooting, Blind End, Rotary Actuator, Semi-Rotary Actuators, , 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, Hose and Fitting Failure, Flammability, Pinch Points, Heat, Unexpected Motion, Zero Energy State, and a whole lot more.

Hydraulic Schematic Symbols

Updated January, 2017 • 7 Materials

Schematic symbol reading is a vital troubleshooting skill.

Learn about: drafting, shuttle valve, variable, operator, rotation, electrical line, mechanical linkage, and a whole lot more.

Hydraulic Steering

Updated January, 2018 • 6 Materials

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

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

Hydrostatic (Closed Loop) Systems

Updated July, 2018 • 14 Materials

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

Learn about: Hot Oil Shuttle Valve, Cross Port Relief, Cavitation, Charge Pump, Reversing Flow, Servo, Heat, and a whole lot more.

Load Sensing Pumps

Updated January, 2017 • 11 Materials

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

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

Open & Closed Center Systems

Updated January, 2017 • 13 Materials

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

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

Parallel & Series Systems

Updated January, 2017 • 21 Materials

Parallel and Series circuits behave very differently.

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

Positive & Non-Positive Pumping

Updated May, 2018 • 21 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: Slippage, Non Positive Displacement, Aeration, Charge Pump, Cavitation, Partial Vacuum Pressure, Starved Inlet, and a whole lot more.

Pressure & Flow

Updated October, 2018 • 23 Materials

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

Learn about: Flow Rate, Hydraulic Pressure, Gauge, Resistance, Fluid Velocity, Velocity, Hydraulic Flow, and a whole lot more.

Pressure Reducing Valves

Updated January, 2017 • 5 Materials

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

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

Pressure Relief Valves

Updated January, 2017 • 21 Materials

Jump into relief valves with this colorful session.

Learn about: direct acting relief, cracking pressure, normally open, sequence valves, balanced relief valve, cartridge, pressure spikes, and a whole lot more.

Sequence Valves

Updated January, 2017 • 5 Materials

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

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

Unloading Valves

Updated January, 2017 • 6 Materials

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

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

14 Machinery Sessions

Blast Hole Drills

Updated August, 2018 • 3 Materials

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

Learn about: Blast Hole Drill, Propel, Simulation, Atlas Copco, Diverter, Holdback, Hydraulic Circuit, and a whole lot more.

Cat Excavators

Updated September, 2018 • 3 Materials

No description.

Learn about: , and a whole lot more.

Cat Haul Trucks

Updated October, 2018 • 1 Material

No description.

Learn about: , and a whole lot more.

Coal Stacker-Reclaimer

Updated June, 2018 • 2 Materials

No description.

Learn about: , and a whole lot more.

Coiled Tubing Units

Updated April, 2018 • 3 Materials

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

Learn about: hydraulic faults , chain tension, injector traction, coiled tubing, Coil tubing injector, 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: Electro-hydraulic control valve, pump controller, solenoid valves, heavy machinery, pump regulator, EHC Valve, and a whole lot more.

Hydraulic Governor

Updated April, 2018 • 2 Materials

The governor is a critical component in hydroelectric dams.

Learn about: governor, engine, power, generation, regulate, electricity, hydraulic, 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, Live Schematic, Steering, Komatsu, Bleeddown Manifold, Hoist, and a whole lot more.

Loaders

Updated October, 2018 • 5 Materials

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

Learn about: Mobile Equipment Hydraulic, Lift, Boom, Loader Schematic, Bucket, Auxiliary, Front-End Loader, 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, Cement Metering Valve, Air Entrainment, Dust, Mixing Head, Diffuser, and a whole lot more.

Oilfield Pumping

Updated June, 2018 • 6 Materials

Reciprocating plunger pumps are very common in oilfield pumping.

Learn about: Discharge Valve, Positive Displacement Pumping, Triplex, High Pressure Pumping, Reciprocating Plunger Pump, Quintuplex, Packing, 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 bale press, pulp and paper, and a whole lot more.

Rail Car Dumper

Updated May, 2018 • 1 Material

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

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

Sawmill Conveyors

Updated April, 2018 • 1 Material

Sawmills are full of specialized hydraulic and electrical equipment.

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

We Are Here To Help You

Find Answers at the Help Center

Email support@lunchboxsessions.com

Toll Free (North America) 1-866-628-3224

Monday to Friday, 8am to 4pm MST

About Us Pricing Session Listing

Class Login Server Status