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2 2020

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Application of multi-stage window comparator circuit with safety mode for swell voltage control in low voltage systems

Wongcharoen Saktanong, Deeon Sansak

Przegląd Elektrotechniczny

2020

R. 96, nr 5

84--90

This article presents the application of a multi-stage window comparator circuit with safety mode for swell voltage control in low voltage systems that lack stability and electrical quality. High-voltage transistors were used to build a simple voltage detecting circuit with multi-stage functions and electronic load to detect and control swell voltage . SVSS as the overloaded energy receptor resulted in clamping voltage. The voltage of a device is equal to the voltage flowing to smart electronic loads and not over the IEEE 1159 and 1100 standards. The device worked normally without causing damages. Failure Mode and Effect Analysis (FMEA) might occur using a multi-stage window comparator circuit in the safety mode. The reliability and stability in detecting voltage and controlling electronic loads to work safely under many kinds of situations were also assessed.

W artykule zaprezentowano wykorzystanie komparatorów do kontroli zwiększonego napięcia w systemach niskiego napięcia. Napięcie nie przekracza zaleceń norm IEEE 1159 i 1100.

Application of electronic load circuit for electrical safety by using a serial mode comparator

Wongcharoen Saktanong, Deeon Sansak, Mungkung Narong

Przegląd Elektrotechniczny

2020

R. 96, nr 4

17--22

This research presented an electronic load circuit for electrical safety by using a serial mode comparator as a protection device against surges caused by electrical power lacking stability and quality. The application of comparators in detecting overvoltage and driving electronic load is possible because of a transistor which is a simple device for failure prevention used in the circuit design. The properties of the circuit can be set. Relation management for failures which might occur in the electrical system is done through SPDs for surge protection. The electronic load is used as a device to reduce swell. The experiment showed that the electronic load circuit could work according to the design, without any failure, and was efficient. The let-through voltage which came to the load did not reach the level at which electrical devices and electronics would get the failure. The circuit could work without interruption. Moreover, the results from the Failure Modes and Effects Analysis (FMEA) showed that they met the specified standards.

W pracy przedstawiono układ obciążenia obwodu elektrycznego/elektronicznego zabezpieczający obwód przed uszkodzeniem powodowanym przez brak stabilności zasilania. Układ wykorzystuje szeregowo połączenie komparatorów reagujących na przepięcia. Eksperymenty wykazały skuteczne działanie obwodu.