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Electronics Theory

How to Troubleshoot Transistor (BJT) Circuits Correctly

Last Updated on May 20, 2026 by Swagatam 9 Comments

checking DC level of Vbe

Troubleshooting BJT circuits is basically a process of identifying the electrical faults in the network using multimeters across the various nodes in the circuit. BJT troubleshooting techniques is a huge topic and therefore including 100 % solutions and strategies can be perhaps difficult within a single article. Basically, the user should know about a handful […]

Filed Under: Electronics Theory Tagged With: BJT, Circuits, Correctly, Transistor, Troubleshoot

Learning Basics of Semiconductors

Last Updated on May 20, 2026 by Swagatam 2 Comments

In this post I will comprehensively explain regarding the fundamental working principles of semiconductor devices, and how the internal structure of semiconductors function under the influence of electricity. The resistivity value between these semiconductor materials neither has a complete conductor characteristic nor a complete insulator, it is in between these two limits. This feature may […]

Filed Under: Electronics Theory Tagged With: Basics, Learning, Semiconductors

Capacitor Inductor Calculations

Last Updated on May 20, 2026 by Swagatam 4 Comments

function of I

Inductors can be imagined as the opposite of capacitors. The main difference between a capacitor and an inductor is that a capacitor carries a protective dielectric between its plates, which inhibits the conduction of current across its terminals. Here it acts like an open circuit. On the other hand the inductance of an inductor is […]

Filed Under: Electronics Theory Tagged With: Calculations, Capacitor, Inductor

How to Connect Transistors (BJT) and MOSFET with Arduino

Last Updated on May 20, 2026 by Swagatam 14 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

H-Bridge Bootstrapping

Last Updated on May 20, 2026 by Swagatam 30 Comments

h bridge

Bootstrapping is a crucial aspect that you will find in all H-bridge or full bridge networks with N-channel mosfets. It is a process in which the gate/source terminals of the high side mosfets are switched with a voltage that’s at least 10V higher than its drain voltage. Meaning, if the drain voltage is 100V, then […]

Filed Under: Electronics Theory Tagged With: Bootstrapping, Bridge

Field-Effect Transistors (FET)

Last Updated on May 20, 2026 by Swagatam 2 Comments

JFET

The field-effect transistor (FET) is an electronic device in which an electric field is used to regulate the flow of current. To implement this a potential difference is applied across the gate and source terminals of the device, which alters the conductivity between the drain and source terminals causing a controlled current to flow across […]

Filed Under: Electronics Theory Tagged With: Effect, FET, Field, Transistors

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