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Question 2. A ferrite core shown in fig.2 is known as a pot-core. The central ferrite cylinder, bottom and sides make up a single piece. The coil is placed around the central core and a flat ferrite disc is installed at the top (a small opening exists for the flow of electric connections). The coil inductance is adjusted according to the reduction of height of the central core with the goal of introducing an air gap. The diameter of the central core is 22mm. The ferrite's reluctance is too small to be considered. a) Present the magnetic equivalent circuit. b) Assuming a 1250 winding coil, calculate the air gap for an inductance of 350mH. c) Considering Bmax = 0,38 T in the core, calculate the maximum current in the coil.

Question 2. A ferrite core shown in fig.2 is known as a pot-core. The central ferrite cylinder, bottom and sides make up a single piece. The coil is placed around the central core and a flat ferrite disc is installed at the top (a small opening exists for the flow of electric connections). The coil inductance is adjusted according to the reduction of height of the central core with the goal of introducing an air gap. The diameter of the central core is 22mm. The ferrite's reluctance is too small to be considered. a) Present the magnetic equivalent circuit. b) Assuming a 1250 winding coil, calculate the air gap for an inductance of 350mH. c) Considering Bmax = 0,38 T in the core, calculate the maximum current in the coil.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question 2. A ferrite core shown in fig.2 is known as a pot-core. The central ferrite cylinder, bottom and sides make up a single piece. The coil is placed around the central core and a flat ferrite disc is installed at the top (a small opening exists for the flow of electric connections). The coil inductance is adjusted according to the reduction of height of the central core with the goal of introducing an air gap. The diameter of the central core is 22mm. The ferrite's reluctance is too small to be considered. a) Present the magnetic equivalent circuit. b) Assuming a 1250 winding coil, calculate the air gap for an inductance of 350mH. c) Considering Bmax = 0,38 T in the core, calculate the maximum current in the coil. d) What is the consequence of the circulation of current in the coil larger than the value calculated in (c)? Figure 2.1
Transcribed Image Text:Question 2. A ferrite core shown in fig.2 is known as a pot-core. The central ferrite cylinder, bottom and sides make up a single piece. The coil is placed around the central core and a flat ferrite disc is installed at the top (a small opening exists for the flow of electric connections). The coil inductance is adjusted according to the reduction of height of the central core with the goal of introducing an air gap. The diameter of the central core is 22mm. The ferrite's reluctance is too small to be considered. a) Present the magnetic equivalent circuit. b) Assuming a 1250 winding coil, calculate the air gap for an inductance of 350mH. c) Considering Bmax = 0,38 T in the core, calculate the maximum current in the coil. d) What is the consequence of the circulation of current in the coil larger than the value calculated in (c)? Figure 2.1
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