Students view the formulas to be used to convert a series impedance to a parallel impedance.

Students view the formulas to be used to convert a parallel impedance to a series impedance.

Learners examine the impedance matching capability of a transformer and how to select the proper turns ratio to achieve this function. A brief quiz completes the activity.

Learners consider why an impedance matching transformer is needed to connect an antenna to a television.

Students read how to determine the total impedance of a parallel circuit using complex numbers. The "J" term is used in the calculations.

Students solve six problems for series impedance using complex numbers. Immediate feedback is given.

Students work six practice problems to determine the total impedance of a parallel circuit.

Students follow the steps for finding the total impedance for a series-parallel circuit. Several examples are given.

Students view several examples of how to determine the total impedance of a series circuit. The "j" term is used in all of the calculations.

Students solve five problems to determine the total impedance of a series-parallel circuit. Immediate feedback is given.

In this interactive object, students calculate capacitive reactance, phase angle, impedance, and power in series RC circuits.

Students calculate current, phase angle, resistor voltage, inductor voltage, and power.

In this animated object, learners view the operation of an open-collector inverter with and without a pull-up resistor.

In this teaching and learning aid, the user can alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

In this interactive object, students calculate inductive reactance, impedance, current, and power in parallel RL circuits.

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Learners examine the correct method for calculating complex reciprocals. The solution for total impedance of a parallel circuit in rectangular form is shown.

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Students read an introduction to the transconductance amplifier. They also view formulas for voltage-to-current conversion, closed-loop input, and output impedance. An example of how R1 controls the conversion factor is given.

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.