A specialized testing complex for controlling semiconductor devices, such as varistors, and surge protection devices has been developed at Novosibirsk State Technical University. This complex is designed for testing electrical equipment that is used in many household appliances to protect against voltage surges, the university's press service reported.
Representatives of Hakel JSC approached us. Their main activity is the manufacture of surge protection devices. Now they are opening a new direction of radio-electronic production in Russia — their own production of varistors.
This requires the availability of a production site and testing equipment that will allow verifying the compliance of varistor parameters with established state standards. Scientists have developed a system for testing varistors using pulsed electrical loads to ensure that their technical characteristics meet the requirements.
Varistors are important components that protect electronic devices and networks from voltage surges caused by lightning strikes, network switching, or electromagnetic interference.
Their non-linear voltage-current characteristic (VAC) allows effectively limiting overvoltages, absorbing excess energy and preventing equipment damage. Varistors are used in household, industrial and telecommunications equipment, as well as in the automotive industry and generator sets.
The system consists of three generators and an external power source. A special unit is connected to the generators, which allows testing.
According to Mülbaer, one of the main advantages of the developed testing complex is the ability to control it both from the generator panel and remotely, using a personal computer. In addition, the complex has a wide range of operating voltages, which allows testing devices with different characteristics.
The system design includes locking systems that protect the operator from electric shock. Also, the design of the generator test chamber protects the operator from flying debris in the event of destruction of the devices under test.
Earlier, scientists from Penza State University developed software for analyzing electrocardiograms. This innovative technology is based on a method of analyzing the histogram of data distribution. A patent has already been obtained for this development, which can be used for early detection of heart disorders in patients.
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