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Electronics Theory

How to Connect Transistors (BJT) and MOSFET with Arduino

Last Updated on March 28, 2022 by Swagatam 12 Comments

BJT PNP NPN pinouts

The interfacing of power devices like BJTs, and MOSFETs with Arduino output is a crucial configuration which allows switching high power loads through low power outputs of an Arduino. In this article we elaborately discuss the correct methods of using or connecting transistors like BJTs and mosfets with any microcontroller or an Arduino. Such stages […]

Filed Under: Electronics Theory Tagged With: Arduino, BJT, Connect, MOSFET, Transistors

How to Generate PWM Using IC 555 (2 Methods Explored)

Last Updated on March 25, 2022 by Swagatam 91 Comments

oscillator 555 50 duty cycle 080261320

The IC 555 is an extremely useful and versatile device which can be applied for configuring many useful circuits in the field of electronics. One very useful feature of this IC is its ability to generate PWM pulses which can be dimensioned or processed as per the needs of the application or the circuit. What’s […]

Filed Under: Electronics Theory Tagged With: 555, Explored, Generate, Methods, PWM

Communication Protocols in Microcontrollers Explained 

Last Updated on February 25, 2022 by Swagatam 4 Comments

UART communication

In this post I am going to explain various communication protocols that are used by microcontrollers, microprocessors and ICs for communicating with various sensors, electronic drivers, input and output devices.  We will see: Why do communication protocols exist in electronics? UART protocol. I2C or IIC or “I squared C” protocol. SPI or Serial Peripheral Interface […]

Filed Under: Electronics Theory Tagged With: communication, Explained, Microcontrollers, Protocols

Cathode Ray Oscilloscopes – Working and Operational Details

Last Updated on February 23, 2022 by Swagatam 13 Comments

example 22.1

In this post I will elaborately explain how Cathode Ray Oscilloscopes (CRO) work and its internal construction. We will also learn how to use a CRO using the various controls and understand the graphical representations of the various input signals on the display screen of the scope. Importance of Cathode Ray Oscilloscopes (CRO) We know that majority […]

Filed Under: Electronics Theory Tagged With: Cathode, Details, Operational, Oscilloscopes, Working

How to Understand IC 4017 Pinouts

Last Updated on February 17, 2022 by Swagatam 242 Comments

The IC 4017 can be considered as one of the most useful and versatile chip having numerous electronic circuit applications. About IC 4017 Technically it is called the Johnsons 10 stage decade counter divider. The name suggest two things, it’s something to do with number 10 and counting/dividing. The number 10 is connected with the […]

Filed Under: Electronics Theory Tagged With: 4017, Pinouts, Understand

Inductor Working and Designing, with Formulas

Last Updated on December 16, 2021 by Swagatam 8 Comments

inductor image

In this post I have explained all the basics of inductors, its working principle, and how to design inductors with the help of formulas and calculations. Inductors are vastly used from mobile, laptop chargers to high-end communication equipment like mobile base stations to the satellites orbiting the earth. Let us take a deep dive into […]

Filed Under: Electronics Theory Tagged With: Designing, Formulas, Inductor, Working

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