Learn the principles of AC/DC and solid-state theories. Digital electronic theory is also introduced.
Power Devices (A8206)
This lesson is designed for participants familiar with AC/DC theory, electrical safety, electrical print reading, electrical connections, semiconductors and diodes. The ability to use electrical test instruments is also required.
This lesson describes the operating principles and function of transistors, SCR’S, and triacs and shows how current flows through each device. Schematic symbols for transistors, SCR’S, and triacs are also shown and explained.
Describe the switching and amplification functions as well as the three regions of a transistor. Identify the schematic symbols for PNP and NPN transistors and explain how current flows through each type. Explain how transistors perform switching and amplification functions. Use an ohmmeter to test a transistor. Identify the schematic symbols for a SCR and a triac and explain how they operate.
ELECTRICAL THEORY FOR TROUBLESHOOTERS LIBRARY( 7 )
This lesson shows and explains how a basic DC electrical circuit operates and how voltage, current, and resistance behave in a series circuit, a parallel circuit, and a series parallel circuit. Procedures for using Ohm’s Law to calculate voltage, current, and resistance in a circuit are also provided. The first in a seven part series.
This lesson covers the basic characteristics of AC circuits including the relationship between voltage and current flow in an AC circuit, the way in which AC voltage is induced, and the cause and effect of inductance and capacitance in AC circuits. The second in a seven lesson series.
This lesson shows how three-phase AC voltage is generated and describes different characteristics of three-phase voltage. The lesson introduces two types of winding electrical connections with graphic demonstrations of their effect on voltage and current. The third in a seven lesson series.
This lesson presents the basic operating theories of electronic power supplies, half-wave rectifiers, full-wave rectifiers, full-wave bridge rectifiers, capacitive input filters, and inductive input filters. The lesson shows how to calculate the expected DC output voltage for a half-wave rectifier, full-wave rectifier, and full-wave bridge rectifier. The fifth in a seven lesson series.