Question7: Suppose that an electromechanical relay has a coil voltage rating of 5 volts, and a coil resistance of 250 2. However, you desire to energize this relay with a 24 volt power supply. You know that a series-connected resistor might enable the 5-volt relay coil to be powered by the 24-volt supply without damage, but you do not know what size of resistor would be appropriate for the task. Draw a schematic diagram for such a circuit, showing the power supply (battery symbol), relay, and resistor. Explain how the resistor's value would be calculated, along with the calculated value in ohms.

Question7: Suppose that an electromechanical relay has a coil voltage rating of 5 volts, and a coil resistance of 250 2. However, you desire to energize this relay with a 24 volt power supply. You know that a series-connected resistor might enable the 5-volt relay coil to be powered by the 24-volt supply without damage, but you do not know what size of resistor would be appropriate for the task. Draw a schematic diagram for such a circuit, showing the power supply (battery symbol), relay, and resistor. Explain how the resistor's value would be calculated, along with the calculated value in ohms.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter9: Components For Electric Motors

Section: Chapter Questions

Problem 11RQ

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