Voltage, current, and frequency are the basic three measured parameters in electrical measurement, of which voltage measurement is very common. As the technology of electronics develops, low voltage measurement becomes more important. Therefore, the millivoltmeter becomes an essential tool.

A power quality analyzer is a device used to measure electric power signals in order to determine the load’s ability to function properly with that electric power.

Signal generators, also known as signal sources or oscillators, have a wide range of applications in production practice and technology.