Lathe Project: Facing and Center Drilling
By Thaddeus Hetzer
The learner reads step-by-step work instructions and views a drawing for facing and center drilling on a lathe.
Transistor Fundamentals: JFET Amplifiers
By Patrick Hoppe
Students read an explanation of the common-source and source-follower amplifiers. Gain formulas are developed and an example is given.
Lathe - Cutting Tool Shapes
By Kelly Curran
This document is a visual and text description of lathe cutting tool shapes.
Feed Rate Calculations
This content gives the student a text and photo overview of feed rate calculations.
Potentiometer Application
By Terry Bartelt
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.
DC/AC I: Unit 12 Sample Exam
A sample exam for DC/AC I, unit # 12 is presented to the students. This unit covers transformers.
Transistor AC Analysis Practice Problem: Circuit #3
The learner solves for Zin(base), Zin(stage), Zout, and Av. A "help" screen is available.
Saw - Marvel - PCII - Programming a Job (Full CNC)
By Dave Hoffman
The student views step-by-step instructions for programming a "job" with the PCII on the Marvel vertical band saw.
The Timing Functions of Optical Sensors
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.
Spark Testing of Materials
The learner sees photos of the spark patterns of various materials and their related properties.
Diode Approximations (Screencast)
This learning object introduces the three approximations of a diode.
Surface Finish
By Barbara Anderegg
Learners review surface finish basics and read how to calculate the roughness average.
Lockout / Tagout
In this learning activity you'll review the information and images on lockout and tagout procedures.
Cutting Speeds & RPM Calculations
In this document you'll review an overview of cutting speeds and RPM calculations.
Voltage Drops
By Tim Tewalt, Patrick Hoppe
In this animated object, learners drag resistors of the proper value into a series circuit to cause a required amount of current to flow. Seven review questions complete the activity.
General Shop Safety - Rigging & Lifting
In this learning activity you'll review rigging and lifting as well as signals for crane movement.
Lathe Project: Tapers with a Taper Attachment - Gear Spindle
This project gives a drawing with steps to complete the activity.
Lathe Project: Turning with a Follower Rest
Layout Project: Tool Bit Grinding Gage
This project gives the student a drawing and steps to complete an activity.
Transistor DC Analysis Practice Problems: Circuit #5
Learners analyze an emitter-biased npn transistor circuit. A "help" screen is available.
Programming Hurco Controller – Manual Mode
In this learning activity you'll review an explanation of how to operate the Hurco Controller in the manual mode.
The DC Motor
Learners examine the wiring of the primary components of the three types of DC motors, series, shunt, and compound. The operational characteristics of each type of motor are described. A quiz completes the activity.
Lathes: Screw Thread Micrometer
This document is a visual and text description of using a screw thread micrometer with a lathe.
Methods of Producing Electricity
In this learning activity you'll review the six different ways in which electricity is produced: chemical, friction, heat, light, magnetism, and pressure.
What Is Current?
Learners study an animation that shows how a battery charge reduces over time and when varying resistance values are placed in a series circuit. Ten review questions complete the activity.