People who come into contact with a DC resistance tester for the first time often have this question - even if it's just measuring resistance, using two multimeter probes is enough? In fact, a multimeter may have an error of tens or even hundreds of milliohms when measuring small resistors in th
After years of maintenance in the power system, I have found that many people know that transformers need to undergo "oil testing", but they cannot explain exactly what "dielectric strength" is measured. This article thoroughly explains this concept.The essence of dielectric stre
Many people have been using the Karl Fischer moisture analyzer for several years and cannot explain what is happening inside the instrument, only knowing about "injection, waiting for results, and reading". That's no problem, the instrument design is designed to allow people to operate
The essence of DC high-voltage generatorSimply put, it is a device that can convert 220V mains power into tens or even hundreds of kilovolts of DC high voltage. The core technology is high-frequency pulse width modulation (PWM), which maintains high stability of the output voltage through closed-loo
Many people think that a transformer ratio tester is just to measure the transformer ratio, and then put it away after use. Engineers who have truly used HZTTR80A know that the testing function of this instrument goes far beyond just one variable ratio value, covering almost the entire set of indica
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