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Newly Updated Circuit Projects:

BC636 Transistor Datasheet [45 V 1 Amp PNP Transistor]

Last Updated on May 17, 2026 by Swagatam 3 Comments

BC636 datasheet and pinout

The BC636 is a PNP bipolar junction transistor (BJT) that is specifically designed for low noise amplifier and switching applications. Here’s the complete datasheet of the transistor BC636. Pinout Configuration Referring the pinout diagram above, the BC636 transistor 3 pinouts. Electrical Characteristics: Package Details: Operating Conditions: The maximum operating temperature for the BC636 is 150°C. […]

Filed Under: Datasheets and Components Tagged With: BC636, Datasheet, PNP, Transistor

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 202 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

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

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