Electrical Engineering › Section G · Capacitors › Topic G.2
Capacitance, dielectrics, and capacitor types
A capacitor is two conductors with an insulator between them, and its capacitance says how much charge it holds for each volt. Plate area, spacing and the insulating material set that value, while the insulator also sets how much voltage the part can survive.
In this topic
- Charge per volt
- Capacitance of parallel plates
- Dielectrics and permittivity
- Worked example: a parallel-plate capacitor
- Dielectric strength and voltage rating
- Worked example: thickness against capacitance
- Leakage and other imperfections
- Types of capacitor
- Markings and uses
- Common mistakes to avoid
- Key takeaways
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