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LM3915 IC Datasheet, Pinout, Application Circuits

Last Updated on May 18, 2026 by Swagatam 21 Comments

LM3915 typical application circuit

If you are having difficulty in understanding how to use an LM3915 IC, this article will help you to easily construct any desired applicable circuit using this IC. Here, I will elucidate the datasheet of the IC LM3915, its pinout functions, its main electrical specifications, and also a few useful application circuits. General Description The […]

Filed Under: Datasheets and Components Tagged With: Application, Circuits, Datasheet, LM3915, Pinout

2N3055 Datasheet, Pinout, Application Circuits

Last Updated on May 18, 2026 by Swagatam 20 Comments

2N3055 power derating

The 2N3055 is a power bipolar transistor designed to handle high power loads in the range of 100 V, and 15 amps. In this post I will comprehensively discuss the pinout function, electrical specification, and application designs for the power transistor 2N3055. If you are an electronic hobbyist, you might have certainly used this very […]

Filed Under: Datasheets and Components Tagged With: 2N3055, Application, Circuits, Datasheet, Pinout

TL494 Datasheet, Pinout, Application Circuits

Last Updated on May 18, 2026 by Swagatam 53 Comments

pin layout for TL494 IC

The IC TL494 is a versatile PWM control IC, which can be applied in many different ways in electronic circuits. In this articles I have explained in detail regarding the main functions of the IC, and also how to use it in practical circuits. General Description The IC TL494 is specifically designed for single chip […]

Filed Under: Datasheets and Components Tagged With: Application, Circuits, Datasheet, Pinout, TL494

LM12 IC Datasheet, Application Circuits

Last Updated on May 18, 2026 by Swagatam 2 Comments

LM12 internal schematic

LM12 is a power operational amplifier integrated circuit (IC) developed by National Semiconductor (now owned by Texas Instruments). It is designed for use in high-power audio amplifiers, servo amplifiers, and other high-current applications. Here are the electrical specifications and technical datasheet of the LM12: Electrical Specifications: Technical Specifications: Overall, the LM12 is a high-performance power […]

Filed Under: Datasheets and Components Tagged With: Application, Circuits, Datasheet, LM12

6 Useful DC Cell phone Charger Circuits Explained

Last Updated on May 17, 2026 by Swagatam 299 Comments

DCcellphonechargercircuit

A DC cell phone or mobile phone charger is a device which charges a cellphone from an available DC supply source. The device converts the unregulated DC source into a constant current and constant voltage output which becomes safe for any mobile phone charging. In this article I have explained how to build DC to […]

Filed Under: Battery Charger Circuits Tagged With: Cell, Charger, Circuits, DC, Phone, Useful

4 Simple Battery Desulfator Circuits Explored

Last Updated on May 17, 2026 by Swagatam 385 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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