Power supplies used in medical devices and in the vicinity of patients must pass several stringent tests, including a leakage test to ensure that touching the external enclosure of the power supply does not result in electric shock. The figure shows the circuit diagram for the measuring device used in the leakage test, with R₁ = 10.0 kn, R₂ = 3.00 kn, and C₁ = 14.0 nF. a R₂ ≤ R₁ www C₁: The leads a and b are attached to the opposite sides of the power supply enclosure. If there is a potential difference between the sides, power is delivered to the circuit at 60.0 Hz. The potential difference across the capacitor is measured by an ideal voltmeter in the measuring device. (a) What is the impedance of the circuit in the measuring device (in (2)? 2.598e6 x What is the relationship between the two resistors in the circuit? Are they in series or in parallel? Can the impedance of each branch of the circuit be used to calculate the total impedance? Q (b) If the maximum allowable leaked rms voltage drop measured by the voltmeter is 45.0 V, what is the rms current (in mA) in the branch of the circuit containing the capacitor for this voltage? 0.017 x How is the current across the capacitor related to the voltage and the impedance of the capacitor? mA
Power supplies used in medical devices and in the vicinity of patients must pass several stringent tests, including a leakage test to ensure that touching the external enclosure of the power supply does not result in electric shock. The figure shows the circuit diagram for the measuring device used in the leakage test, with R₁ = 10.0 kn, R₂ = 3.00 kn, and C₁ = 14.0 nF. a R₂ ≤ R₁ www C₁: The leads a and b are attached to the opposite sides of the power supply enclosure. If there is a potential difference between the sides, power is delivered to the circuit at 60.0 Hz. The potential difference across the capacitor is measured by an ideal voltmeter in the measuring device. (a) What is the impedance of the circuit in the measuring device (in (2)? 2.598e6 x What is the relationship between the two resistors in the circuit? Are they in series or in parallel? Can the impedance of each branch of the circuit be used to calculate the total impedance? Q (b) If the maximum allowable leaked rms voltage drop measured by the voltmeter is 45.0 V, what is the rms current (in mA) in the branch of the circuit containing the capacitor for this voltage? 0.017 x How is the current across the capacitor related to the voltage and the impedance of the capacitor? mA
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Transcribed Image Text:Power supplies used in medical devices and in the vicinity of patients must pass several stringent tests, including a leakage test to ensure that touching the external enclosure of
10.0 ΚΩ, R2 = 3.00 kn, and
the power supply does not result in electric shock. The figure shows the circuit diagram for the measuring device used in the leakage test, with R₁
C₁ = 14.0 nF.
a
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R₁
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b
The leads a and b are attached to the opposite sides of the power supply enclosure. If there is a potential difference between the sides, power is delivered to the circuit at
60.0 Hz. The potential difference across the capacitor is measured by an ideal voltmeter in the measuring device.
(a) What is the impedance of the circuit in the measuring device (in )?
2.598e6
X
What is the relationship between the two resistors in the circuit? Are they in series or in parallel? Can the impedance of each branch of the circuit be used to calculate the
total impedance? Ω
(b) If the maximum allowable leaked rms voltage drop measured by the voltmeter is 45.0 V, what is the rms current (in mA) in the branch of the circuit containing the capacitor
for this voltage?
0.017
X
How is the current across the capacitor related to the voltage and the impedance of the capacitor? mA
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