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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

12V Battery Charger Circuits [using LM317, LM338, L200, Transistors]

Last Updated on May 17, 2026 by Swagatam 200 Comments

317CIRCUIT

In this article I will be discussing a list of simple 12V battery charger circuits which are very easy and cheap by its design yet extremely accurate with its output voltage and current specs. All the designs presented here are current controlled meaning their outputs will never go beyond a predetermined fixed current level. UPDATE: […]

Filed Under: Battery Charger Circuits Tagged With: 12V, Battery, Charger, Circuits, LM317, LM338

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

Lead Acid Battery Charger Circuits

Last Updated on May 17, 2026 by Swagatam 323 Comments

highcurrentbatterycharegrcircuit

The lead acid battery charger circuits I have explained in this article can be used for charging all types of lead acid batteries at a specified rate. This article explains a few lead acid battery charger circuits with automatic over charge, and low discharge cut off. All these designs are thoroughly tested and can be […]

Filed Under: Battery Charger Circuits Tagged With: Acid, Battery, Charger, Circuits, Lead

4 Simple Battery Desulfator Circuits Explored

Last Updated on May 17, 2026 by Swagatam 381 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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