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100A AC Load Monitoring Circuit using Arduino, Watt Limit, LCD, Alarm, Auto Shutdown

Last Updated on June 3, 2025 by Swagatam 2 Comments

In this project we are going to make one very useful grid power protection circuit. This will be like a power guard system which we can use in homes or apartments to monitor the wattage of the load and also to cut off the load automatically if it starts taking too much wattage, more than […]

Filed Under: Arduino Projects Tagged With: 100A, AC, Arduino, Load, Monitoring, Watt

How Load Conducts in Half-Bridge Driver Circuits like IR2184 or IR2110

Last Updated on May 4, 2025 by Swagatam Leave a Comment

Many folks, especially beginners, they get fully confused when they try to use a half-bridge driver circuits using ICs like IR2184 or IR2110. They look at the datasheet diagram and start thinking, “Bro, how the load will conduct? The MOSFETs are switching one by one so how the current will pass through the load? Looks […]

Filed Under: Electronics Theory, Inverter Circuits Tagged With: Bridge, Circuits, Conducts, Driver, Half, Load

Monitoring 220V AC Load Current using Current Transformer [Circuit Diagram]

Last Updated on December 10, 2023 by Swagatam 36 Comments

current sensing transformer

In this post I have explained a circuit which can be used for monitoring or controlling AC 220V load current by sensing the load current through a contactless current transformer. Figure 1 below depicts a circuit diagram designed for a non contact load current sensing through a current transformer, which seemed to work well. It is […]

Filed Under: Security and Alarm Tagged With: 220V, AC, Current, Load, Monitoring, Transformer

Dummy Load Circuit for Testing Power Supplies and Amplifiers

Last Updated on December 3, 2024 by Swagatam 34 Comments

dummy load circuit

In the following post I have explained two straightforward dummy load circuits: the first one can be used for testing high current power supplies, and the second design can be used for testing large power amplifiers. Suppose you have a 10 amp power supply and you want to confirm the 10 amp output through some […]

Filed Under: Power Supply Circuits Tagged With: Amplifiers, Dummy, Load, Power, Supplies, Testing

Load-Line Analysis in BJT Circuits

Last Updated on January 3, 2024 by Swagatam Leave a Comment

So far we have been studying BJT analysis dependent on the level of β over their corresponding operating points (Q-point). In this discussion we will check out how a given circuit conditions can help in determining the possible range of operating points or Q-points and in establishing the actual Q-point. What is Load Line Analysis […]

Filed Under: Electronics Theory Tagged With: Analysis, BJT, Circuits, Line, Load

Digital Weighing Scale Using Load Cell and Arduino

Last Updated on December 5, 2024 by Swagatam 10 Comments

Circuit

In this post I have explained about strain gauge based load cell. We will be exploring what Strain Gauge is, what Load Cell is, temperature effect on strain gauge, temperature compensation with Wheatstone bridge and Load cell amplifier HX711, and finally I have explained how to build an Arduino based weighing scale machine by implementing […]

Filed Under: Arduino Projects Tagged With: Arduino, Cell, Digital, Load, Scale, Weighing

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