Studies show that more than 75 percent of all hydraulic system failures are a direct result of unclean oil. In this interactive object, learners examine the three primary types of hydraulic system filters. A brief quiz completes the activity.

Learners examine devices that are used to protect a motor from damage, such as fuses, overload heaters, and thermal protectors. A quiz completes the activity.

This animated lesson shows the operation and characteristics of thru-beam optical sensors.

In this animated object, learners examine how two- three- and four-wire sourcing and sinking sensors operate. A brief quiz completes the activity.

Students read about light-emitting diodes, including LED voltage and current, and how to protect against reverse voltage.

In this animated and interactive object, learners study how a DC circuit, consisting of a diac, a capacitor, and two resistors, causes a light-emitting diode to turn on and off. A brief quiz completes the activity.

This learning object introduces the three approximations of a diode.

In this animated object, learners study how displacement level sensors are used to measure the level of liquid in a tank.

In this animated and interactive object, learners examine how a variable voltage is obtained from a variable resistor that is wired as a potentiometer across a fixed DC power supply.

In this interactive object, learners determine the Vp, Vp-p, Vrms, Vavg, and the frequency of a sine wave that is displayed on an oscilloscope screen.

The learner calculates the resultant of multiple forces acting in a concurrent, coplanar load condition.

Learners analyze a base-biased npn transistor circuit. A "help" screen is available.

In this learning activity you'll read the procedures for using the vertical function of an oscilloscope and view illustrations of waveforms.

Learners study the operation of the retro-reflective optical sensor, along with the guidelines that should be followed regarding the target size, reflector size, alignment, and the reflectivity of the target.

In this animated object, learners examine the switch settings for the on-delay, off-delay, and one-shot timing functions of an optical sensor. A brief quiz completes the activity.

Learners consider the factors that determine how well an inductive proximity sensor can detect an object. Those factors are size, position, and the material from which the target is made. A brief quiz completes the activity.

In this interactive and animated object, learners examine orthographic projection and the Glass Box Theory. Front, side, and top view development is demonstrated with pictorial views of each object to help develop 2D to 3D visualization skills.

The learner will calculate input and output circuit resistance for the Inverting Op-Amp configuration.

Students read about the ENTRY, INS, and DEL keys and view a demonstration of how to edit and insert characters and recall previous entries.

Learners read how to set up a TI-86 calculator. The process is demonstrated and examples are given.

Learners study the fundamental operation of a triac, particularly how it is turned on and off. A brief quiz completes the activity.

In this interactive object, learners determine the Vp, Vp-p, Vrms, Vavg, and the frequency of a sine wave that is displayed on an oscilloscope screen.

In this interactive object, learners work 11 problems covering atomic structure, conductors, and insulators.

This primer introduces the student to the proper use of the exponent (EE) function on a TI-86 calculator.

Learners study how a hydrocarbon gas sensor operates and why it is used. A short quiz completes the activity.