
Where…
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V = Voltage (V )
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I = Current (A)
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R = Resistance (in ohms, designated with the omega symbol, Ω)
Basic Device Theory
This section explores the basic device theory of the five most common electronic components: resis-
tors, capacitors, diodes, transistors, and integrated circuits. Understanding the functionality of these
parts is essential to any core electronics knowledge and will prove useful in designing or reverse-engi-
neering products.
Resistors
Resistors are used to reduce the amount of current flowing through a point in a system. Resistors are
defined by three values:
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Resistance (Ω)
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Heat dissipation (in watts, W )
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Manufacturing tolerance (%) ...