Transistor Fundamentals: Base-Biased NPN Transistor
By Patrick Hoppe
Students view a dc analysis of a base-biased NPN transistor.
Transistor Fundamentals: AC Models
Students read about the four steps to creating an ac model and view examples.
Transistor Fundamentals: AC Model Equations
Students view the equations used to determine the ac parameters of the transistor circuit.
Transistor Fundamentals: AC Coupling Capacitors
Students view the design and function of an ac model for a transistor circuit.
Transistor Fundamentals: Voltage-Divider Biased NPN Transistor
Students view drawings of the dc analysis of a voltage-divider biased NPN transistor.
Transistor Fundamentals: AC Bypass Capacitors
Students view drawings of the emitter resistor bypass capacitor.
Transistor DC Analysis Practice Problems: Circuit #5
Learners analyze an emitter-biased npn transistor circuit. A "help" screen is available.
Transistor DC Analysis Practice Problems: Circuit #4
Transistor DC Analysis Practice Problems: Circuit #3
Transistor DC Analysis Practice Problems: Circuit #2
Learners analyze a base-biased npn transistor circuit. A "help" screen is available.
Transistor DC Analysis Practice Problems: Circuit #1
Transistor AC Analysis Practice Problems: Circuit #1
The learner solves for Zin(base), Zin(stage), Zout, and Av. A "help" screen is available.
Transistor AC Analysis Practice Problem: Circuit #5
Transistor AC Analysis Practice Problem: Circuit #4
Transistor AC Analysis Practice Problem: Circuit #3
Transistor AC Analysis Practice Problem: Circuit #2
Transformers - A Mechanical Gear Analogy
By Roger Brown
Learners read an analogy comparing an electrical transformer to mechanical gears.
Transformers
Students read an introduction to transformers that includes schematic symbols, turns ratios, mutual inductance, and the coefficient of coupling.
Transformer Ratios
By Terry Bartelt
Students read descriptions of the voltage, current, and turns ratios of the primary and secondary coils for a transformer in this interactive lesson.
Transformer Practice Problems
Students solve practice problems on voltage, current, and impedance matching. Examples precede the problems.
Transformer Loading
In this animated activity, learners see that changing the resistance value of the load in the secondary of a transformer causes current to vary in the primary.
Transformer Action Demonstration
Learners view animations and video clips showing how power is transmitted from one energized coil to another.
Transfer Functions: The RL Low Pass Filter
Learners read how the transfer function for a RC low pass filter is developed. The transfer function is used in Excel to graph the Vout. The circuit is also simulated in Electronic WorkBench and the resulting Bode plot is compared to the graph from Excel.
Transfer Functions: The RL High Pass Filter (Screencast)
Learners read how the RL high pass filter is developed. The transfer function is used in Excel to graph the Vout. The circuit is also simulated in Electronic WorkBench and the resulting Bode plot is compared to the graph from Excel.
Transfer Functions: The RC Low Pass Filter
Students read how the transfer function for a RC low pass filter is developed. The transfer function is used in Excel to graph the Vout. The circuit is also simulated in Electronic WorkBench and the resulting Bode plot is compared to the graph from Excel.