PMMC Archive
Working principle and construction of PMMC
The PMMC stands for permanent magnet moving coil and it is also called as D’Arsonval instruments. The PMMC works on the electromagnetic effect. A permanent magnet is used to produce magnetic flux and a coil that carries
Advantages and disadvantages of PMMC (permanent magnet moving coil)
There are some advantages of PMMC (permanent magnet moving coil) are given below, The PMMC has uniformly divided scale. The scale may be very long, over about 250 degree. It has a very high torque to weight