ELECTROMAGNETIC COMPATIBILITY AND MEDICAL DEVICES - Design and Development of Medical Electronic Instrumentation - page 188

Multimeter

EUT

Loop Antenna

Ground
Plane

AC Power Supply

Figure 4.32 Setup for assessing the susceptibility of a medical device to magnetic fields. The magnetic field applied to three axes of the
device under test is 10 A/m. This test simulates interference that may be caused on a device by low-frequency magnetic fields, such as those
generated by the power lines.

1 meter

L1

PVC Elbow

J1

T1

Variac

T 2
1 5

PVC "T"

1 meter

To RMS
D VM

24V, 10A

AC Power Plug 110VAC

4 8

1

J2

#18 solid
insulated
wire

C

BN

2

R1
1 Ohm, 20W

3/4" PVC Pipe

Reference
Ground
Plane

Figure 4.33 A magnetic-field induction generator can be built from a coil of wire inside some PVC pipe. This assembly is driven by a
variac-transformer combination to produce the desired magnetic field at the center of the coil.