1-9
attached to the magnet to ensure that the turning force on the coil increases steadily as the current
increases.
The meter movement as it appears when fully assembled is shown in figure 1-9.
Figure 1-9.—Assembled meter movement.
This permanent-magnet moving-coil meter movement is the basic movement in most measuring
instruments. It is commonly called the d’Arsonval movement because it was first employed by the
Frenchman d’Arsonval in making electrical measurements. Figure 1-10 is a view of the d’Arsonval meter
movement used in a meter.
Figure 1-10.—A meter using d'Arsonval movement.
Q7. What type of meter movement is the d’Arsonval meter movement?
