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Abrar is an Electronics and PCB Design Engineer passionate about creating practical circuits and sharing electronics knowledge. He founded CircuitExplained.com to help hobbyists, students, and engineers understand and build real-world electronics.

Inside a USB to Serial Adapter: Schematic, Pinout, and Circuit Explained

August 20, 2026August 15, 2026 by Admin
USB to Serial Adapter

Why RS232 Refuses to Die When you walk into any server room, industrial plant, or hardware … Read more

TPS6303x High Efficiency Buck-Boost Converter Breakout PCB

August 29, 2026July 31, 2026 by Admin
buck-Boost Converter

Components Sr. # Component Part Number Manufacturer Quantity 01 TPS63031DSKT Texas Instruments 01 02 GRM188R60J106KE47J Murata … Read more

Thermostat Wiring Diagram: A Fast Guide for Honeywell and Nest Users

August 29, 2026June 21, 2026 by Admin
thermostat wiring diagram

When you have your thermostat wiring connected, the thermostat wiring diagram will allow you to see … Read more

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Endless Oscillation: Why the 555 Timer Astable Circuit Is So Powerful.

June 21, 2026 by Admin
555 timer circuit

What Is a 555 Timer? When you learn about the basics of electronics, you often question … Read more

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Common and Standard Resistor Values

August 25, 2026June 17, 2026 by Admin
Common and Standard Resistor Values

Resistors are not made in every possible value. Instead, manufacturers follow standardized series called E-series, which … Read more

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What is a pull up resistor?

August 25, 2026June 17, 2026 by Admin
What is a Pull-Up resistor?

A pull up resistor is a small but important component in digital electronics. It connects a … Read more

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What is a pull-down resistor?

August 25, 2026June 17, 2026 by Admin
What is Pull down resistor

What Is a Pull-Down Resistor? A pull-down resistor is an electronic resistor circuit that helps keep … Read more

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UART Communication protocol in Embedded Systems

June 1, 2026May 31, 2026 by Admin
Understanding UART Communication in Embedded Systems: Complete Beginner's Guide

What is UART Communication Protocol? Hey, if you’re just starting out with embedded systems, you might … Read more

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CAN BUS – The Hidden Communication System Inside Your Car

June 1, 2026May 13, 2026 by Admin
Can Bus Protocol

Your car has a built-in meeting system that 99% of people don’t know the name of. … Read more

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LED Resistor Calculation- Build a Simple LED Driver Circuit

June 1, 2026February 14, 2026 by Admin
Led Resistor Featured image

LEDs are everywhere, in power indicators, home lighting, cars, TVs, and DIY electronics projects. But one … Read more

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  • USB to Serial Adapter
    Inside a USB to Serial Adapter: Schematic, Pinout, and Circuit Explained
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    Thermostat Wiring Diagram: A Fast Guide for Honeywell and Nest Users

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