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Newly Updated Circuit Projects:

IC 4018 Datasheet, Pinout Function Explained

Last Updated on May 17, 2026 by Swagatam Leave a Comment

IC 4018 is a 16-pin CMOS presettable divide-by-N counter, also known as a binary counter. It is commonly used in digital electronics for frequency division and timing applications. Description The IC 4018 family includes 5 Johnson-Counter stages, buffered Q outputs from each stage, and counter preset control gating. There are CLOCK, RESET, DATA, PRESET ENABLE, […]

Filed Under: Datasheets and Components Tagged With: 4018, Datasheet, Explained, function, Pinout

IC 4049 Datasheet, Pinout Function, Application

Last Updated on May 17, 2026 by Swagatam Leave a Comment

IC 4049 is a CMOS hex inverting buffer IC that has six independent inverters or NOT gates. It is commonly used in various electronic circuits such as oscillators, timers, and voltage regulators. Here’s the datasheet for IC 4049: General Information: Electrical Characteristics: Pinout Configuration: The pinouts details for the IC 4049 is provided in the […]

Filed Under: Datasheets and Components Tagged With: 4049, Application, Datasheet, function, Pinout

NiMH Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 63 Comments

NiMHCharger

A single state-of-the-art chip, a transistor and a few other inexpensive passive components are the only materials required for making this outstanding, self regulating, over charge controlled, automatic NiMH battery charger circuit. Let’s study the whole operation explained in the article. Main Features: How the Charger Circuit Works Referring to the diagram we see a […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, NiMH

One Transistor Automatic Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 104 Comments

simplestbatterychargercircuit

This one transistor cheap battery charger circuit is designed to automatically switch OFF the supply to the battery as soon as the battery has reached its full charge level. A very simple single transistor automatic battery charger circuit is I have I have explained in this article, which uses just a single transistor for the […]

Filed Under: Battery Charger Circuits Tagged With: Automatic, Battery, Charger, Transistor

Self Regulating Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 263 Comments

In this post I have explained how a neat little self regulating automatic battery charger circuit can be made using just two inexpensive transistors. This circuit will automatically regulate the charging supply to the battery depending on its charge level, by switching the input supply ON and OFF periodically. How it Works As can be […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Regulating, Self

4 Simple Battery Desulfator Circuits Explored

Last Updated on May 17, 2026 by Swagatam 387 Comments

batterydesulfatorcircuit

In this article we investigate 4 simple yet powerful battery desulfator circuits, which can be used to effectively remove and prevent desulfation in lead acid batteries. The first method uses PWM pulses from a 555 PWM circuit, the second method implements an ordinary bridge rectifier for implementing a 100 Hz frequency based desulfation, the 3rd […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Circuits, Desulfator, Explored, Simple

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