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A DC Power Supply is a standard piece of test and measurement equipment widely used in areas of education, circuit test, military R&D, etc. to power and tests the circuit system.

Frequency counters are test instruments used in many applications including laboratories, education, and industrial field to measure the frequency and time of signals very accurately.

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.?