Explore welding electricity fundamentals including electron theory, parts of a circuit, welding power sources, and types of current.

In this learning activity you'll review the six different ways in which electricity is produced: chemical, friction, heat, light, magnetism, and pressure.

Learners examine the fundamentals of a pulse train. Concepts such as time on, time off, duty cycle, period, and frequency are covered.

The learner studies how electrons travel from one atom to the next. Examples demonstrate how voltage is created by the use of a battery or through magnetism. A 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 determine the pulse width, period, duty cycle, and frequency of a waveform.

Students review logarithms as they pertain to electronics.

The inverting amplifier configuration is presented. The closed loop voltage gain and the closed loop bandwidth formulas are explained, along with the concept of negative feedback.

Students read an introduction to the Metal Oxide Semiconductor Field Effect Transistor. They also examine its enhancement mode.

Students read about the characteristics of the ideal operational amplifier and compare them with the industry standard LM741C.

Students read about the four steps to creating an ac model and view examples.

Students view the equations used to determine the ac parameters of the transistor circuit.

Students read an explanation of the common-source and source-follower amplifiers. Gain formulas are developed and an example is given.

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.

Students view a dc analysis of an emitter-biased NPN transistor.

Students read about decibel power gain and decibel voltage gain. Examples are given for each.

Students view a dc analysis of a base-biased NPN transistor.

The current-to-voltage conversion of the transresistance amplifier is examined. The formulas for output voltage and impedance are defined and an example ties the concepts together.

In this interactive object, learners determine the pulse width, period, duty cycle, and frequency of a waveform.

Students examine the drain curves for a JFET. They are also introduced to vocabulary terms and formulas.