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Downloads only for licensed users of versions 5.0 and 5.1. Activation keys are required.

Basic Circuits Challenge Lite
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 No time limit. This is a reduced function version of Basic Circuits Challenge. Use it in your instruction as long as you like.

Basic Circuits Challenge 5.1
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This program is a simple introduction to electricity. Includes activities related to electrical quantities, Ohm's Law, series circuits, parallel circuits, color codes, electrical components and more.

DC Circuits Challenge 5.1
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This interactive computer program consists of twenty activities to help teach DC circuit analysis and troubleshooting. Troubleshooting activities include voltmeter and ammeters to use in testing circuits.

AC Circuits Challenge 5.1
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This program consists of several circuit analysis activities. Realistic troubleshooting activities are included involving resistors, capacitors, inductors and transformers.

Digital Challenge 5.1

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Binary, octal and hex number systems and math are covered. Exercises on gates, truth tables, Boolean Algebra and flip-flops are also included.

Solid-State Challenge 5.1

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Diodes and transistor basic theory and testing are covered. Exercises are  available for transistor amplifier analysis and troubleshooting.

Op Amp Challenge 5.1

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Analyze and design common Op Amp circuits including inverting, noninverting and difference amplifiers. The program includes several troubleshooting activities.

Power Supply Challenge 5.1

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Troubleshoot several linear power supply circuits using an on screen oscilloscope or digital voltmeter. Some very challenging activities are included.

Ohmmeter Challenge 5.1

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Learn to test and troubleshoot several circuit types using a digital ohmmeter.Several activities are very challenging even for the experienced technician.

Voltmeter Challenge 5.1

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Learn to analyze circuit faults and troubleshoot using a digital voltmeter. The activities are challenging as one must think carefully to find the faults.

Trigonometry Challenge 5.1

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This program consists of learning activities for the solution to numerical trig problems. Covers angular measurement, Pythagorean Theorem, Law of Sines, Law of Cosines and basic trig functions.