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Capacitors & Inductors

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Page 1: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be

Capacitors & Inductors

Page 2: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be

Introduction

• Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be retrieved at a later time.

• For this reason, capacitors and inductors are called storage elements.

Page 3: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be

Capacitors

Page 4: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 5: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 6: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 7: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 8: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 9: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be

• Figure 6.4 shows common types of fixed-value capacitors.

• Polyester capacitors are light in weight, stable, and their change with temperature is predictable.

• Instead of polyester, other dielectric materials such as mica and polystyrene may be used. Film capacitors are rolled and housed in metal or plastic films.

• Electrolytic capacitors produce very high capacitance.

Page 10: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be

• Figure 6.5 shows the most common types of variable capacitors.

• The capacitance of a trimmer (or padder) capacitor or a glass piston capacitor is varied by turning the screw.

• The trimmer capacitor is often placed in parallel with another capacitor so that the equivalent capacitance can be varied slightly.

• The capacitance of the variable air capacitor (meshed plates) is varied by turning the shaft.

Page 11: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be

• Variable capacitors are used in radio receivers allowing one to tune to various stations.

• In addition, capacitors are used to block dc, pass ac, shift phase, store energy, start motors, and suppress noise.

Page 12: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 13: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 14: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 15: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 16: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 17: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 18: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 19: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 20: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 21: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 22: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 23: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 24: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 25: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 26: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 27: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 28: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 29: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 30: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be

Inductors

Page 31: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 32: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 33: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 34: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 35: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 36: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 37: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 38: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 39: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 40: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 41: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 42: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 43: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 44: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 45: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 46: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 47: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 48: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 49: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 50: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be
Page 51: Capacitors & Inductors. Introduction Unlike resistors, which dissipate energy, capacitors and inductors do not dissipate but store energy, which can be

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