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Electronics Theory

How Wireless Power Transfer Works

Last Updated on May 20, 2026 by Swagatam 43 Comments

wireless2Bpower2Btransfer 1

Wireless power transfer is a process in which electrical energy is transferred from one system to another system through electromagnetic waves without using wires or any physical contact. In this post I have explained regarding how wireless power transfer works or the transfer of electricity through air without using wires. You might have already come […]

Filed Under: Electronics Theory, Power Supply Circuits Tagged With: Power, Transfer, Wireless, Works

How to Connect a TSOP1738 IR Sensor

Last Updated on May 20, 2026 by Swagatam 74 Comments

TSOP17XX series devices are advanced infrared sensors having a specified center frequency of operation which makes their detection extremely reliable and foolproof. In this post I have explained how to connect a TSOP series infrared sensor and use it for a specified IR remote control operations. TSOP IR Sensor Specifications A TSOP series of IR […]

Filed Under: Electronics Theory, Sensors and Detectors Tagged With: Connect, IR, Sensor, TSOP1738

How a Connect a Potentiometer

Last Updated on May 20, 2026 by Swagatam 10 Comments

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In this article we study how potentiometers work and try to understand how to connect potentiometers in electronic circuits. How Potentiometers Work Potentiometers, or pots as these are called in short form are passive electronic devices which are basically just variable resistors, or resistors whose values can be altered from zero maximum within the given […]

Filed Under: Electronics Theory Tagged With: Connect, Potentiometer

USB Isolator Diagram and Working

Last Updated on May 20, 2026 by Swagatam 14 Comments

usb2Bisolator

The following email discussions were sent to me by Mr John Sweden who is one of the avid readers of this blog, here he explains about an USB isolator device, and how it may be incorporated while using an oscilloscope with a PC, in order to safeguard the oscilloscope and the test circuit from accidental […]

Filed Under: Electronics Theory Tagged With: Isolator, USB, Working

Sine wave PWM (SPWM) Circuit using Opamp

Last Updated on May 20, 2026 by Swagatam 140 Comments

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SPWM refers to Sine Wave Pulse Width Modulation which is a pulse width arrangement in which the pulses are narrower at the start, which gradually get broader at the middle, and then narrower again of the end of the arrangement. This set of pulses when implemented in an inductive application like inverter enables the output […]

Filed Under: Electronics Theory Tagged With: Opamp, PWM, Sine, SPWM, Wave

How Thyristors (SCR) Work – Tutorial

Last Updated on May 20, 2026 by Swagatam 8 Comments

scr 2

Basically an SCR ( Silicon Controlled Rectifier) which is also known by the name Thyristor works quite like a transistor. What  SCR Stands for The device gets its name (SCR) due to its multi layered semiconductor internal structure which refers to the “silicon” word in the beginning of its name. The second part of the […]

Filed Under: Electronics Theory Tagged With: SCR, Thyristors, Tutorial, Work

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