protection circuit
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Building a Simple Current Detector Circuit with 555 Timer and few Passive Components Working with electricity can be a daunting and life-threatening task if you are a beginner in the electronic/electrical field, and things can go very wrong when electricity is not properly handled, which is why safety must come first in order to avoid injury, before starting work on an electric box and AC mains one need to verify that there is no AC leakage voltage.… |
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Over Voltage, Over Current, Transient Voltage & Reverse Polarity Protection Circuit using RT1720 Hot Swap Controller with Fault Timer Oftentimes in an electronic circuit, it's absolutely necessary to use a special protection unit to protect the circuit from overvoltage, overcurrent, transient voltage, and reverse polarity and so on. So, to protect the circuit from these surges, Richtek Semiconductor introduced the RT1720A IC which is an oversimplified protection IC designed to meet the needs. The low-cost… |
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12V 1A Power Supply Circuit Design using VIPer22A Switched-mode power supply circuits (SMPS) are most often required in many electronic designs to convert the AC mains voltage to a suitable level of DC voltage for the device to operate. This type of AC-DC converter takes in the 230V/110V AC mains voltage as input and converts it to low-level DC voltage by switching it, hence the name switch-mode power supply. We have… |
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All About Transformer Protection and Transformer Protection Circuits Transformer protection is crucial as transformers are one of the most critical and expensive components of any distribution system. It is an enclosed static device usually drenched in oil, and hence, faults occurring in it are limited. But the effect of a rare fault can be hazardous for the transformer, and the long lead time for repair and replacement of transformers makes… |
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230V AC Mains Over Voltage Protection Circuit Most of the power supply these days are very reliable due to advancement in technology and better design preferences, but there is always a chance of failure due to a manufacturing defect or it can be the main switching transistor or the MOSFET going bad. Also, there is a possibility that it may fail due to overvoltage at the input, though protection devices like Metal Oxide… |
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Build Your Own 5V, 1A Adjustable SMPS Using a Dead Computer ATX Power Supply A Switch Mode Power Supply (SMPS) is an indispensable part of any electronic design. It is used to convert mains high-voltage AC to low voltage DC, and it does it by first converting the mains AC to high voltage DC, then switching the high voltage DC to generate the desired voltage. We have already made a few SMPS circuits earlier, like this 5V 2A SMPS circuit and 12V 1A… |
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Power Path Controller System using LTC4412 to Switch between Primary and Auxiliary Power There are many situations when our circuit design has two power sources such as an adapter and a battery or it can even be two other power supplies from two different outlets. The requirement of the application can be something like it should always need to remain ON during power failures by using and additional power source that is available. For example, a circuit that is… |
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Why is it Important to Set Date and Time in Numerical Relays? Numerical relays help in protecting different electrical equipment like generator, transformers, transmission lines, and motors. Therefore, many simple yet important things need to be checked with a Numerical Relay, like its running time (which can be manually set), current clock time, and current date. Now, it's common that many people… |
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Construction and Operation of Direct Online Starter Circuit Direct Online Starter or DOL is a simple electromechanical system designed for switching and protection of Induction motors. We all know that motors consume electric power horribly and this high power consumption is the result of current drawn by the winding of the motor. So higher the current drawn by the motor, the higher will be the power… |
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Importance of Relay Coordination in Process Industries There are certainly quite a few cases of inadvertent tripping in cement plants, steel plants, fertilizer plants, FMCG and other industries that many Electrical Engineers witness at a certain point of time. Such scenarios occur in the majority of industries, not for the reason that the protection plan of these industries is not properly coordinated but because changes in the… |
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Inrush Current Limiting using NTC Thermistor This is an article from the sequence of our articles in which we have been discussing about inrush current. We have already covered the basics of inrush current and the various types of Inrush Protection circuits in our previous articles. The most common method of inrush current protection is by using an NTC Thermistor, so in this article, we will discuss more on NTC… |
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Overvoltage Protection Circuit Protection circuits, like reverse polarity protection, short-circuit protection, and over/under voltage protection, are used to protect any electronic appliance or circuit from any sudden mishap. Generally fuse or MCB is used for overvoltage protection. Here in this circuit, we will build a simple overvoltage protection circuit without using a fuse. … |
