T.K.Hareendran

22/10/2024

Self-development 🍄

One hour per day of study in your chosen field is all it takes...

One hour per day of study will put you at the top of your field within three years...

Within five years you’ll be a national authority...

In seven years, you can be one of the best people in the world at what you do!

— Earl Nightingale

— Photo from one of my workbenches

10/10/2024

The best practice is inspired by theory ✨

& Theories are like scaffolding - They are not the house, but you cannot build the house without them 🍕

--Donald Knuth
--Constance Fenimore Woolson

⫸ Electrons and Holes in Semiconductors with Applications to Transistor Electronics is a book by Nobel Prize winner William Shockley, first published in 1950...

It was a primary source, and was used as the first textbook, for scientists and engineers learning the new field of semiconductors as applied to the development of the transistor...

This was the invention that led to electronic computers, ubiquitous communication devices, compact electronics controllers, and a host of other important inventions of the last half of the twentieth century...

The book was printed by D. Van Nostrand in New York, and went through many later printings...

From Wikipedia https://en.wikipedia.org/wiki/Electrons_and_Holes_in_Semiconductors_with_Applications_to_Transistor_Electronics

09/10/2024

My Electronics Workbench ⚡

Partial View (picture taken three months ago)

A creative mess is better than idle tidiness 💞 - Michael J. Fox

Creativity is inventing, experimenting, growing, taking risks, breaking rules, making mistakes, and having fun - Mary Lou Cook

08/10/2024

Non-Contact Liquid Level Sensors 💦

Recently I came across some non-contact liquid level sensors and gathered them out of curiosity.

They have been available in the market for the past few years, but this time I was lucky enough to get hold of it...

Read more https://www.electroschematics.com/non-contact-liquid-level-sensors/

08/10/2024

Greetings! I'm back and ready to hear all your stories 💞

& Get ready for a whirlwind of updates...

Now See 613+ Electronics Circuits & Projects 🔔
https://www.electroschematics.com/author/hareendran/

10/06/2024

Over 450+ Electronics Circuits & Projects... 🔔

Authored by TK Hareendran

Link https://www.codrey.com/author/tkhareendran/

10/06/2024

Around 600+ Electronics Circuits/Projects/Tutorials/Design Ideas 🔔

Authored by TK Hareendran & Powered by Aspencore...

Exclusive Link https://www.electroschematics.com/author/hareendran/

01/06/2024

As long as you keep going, you'll keep getting better. And as you get better, you gain more confidence. That alone is success 🔔

Hello everyone,

I'm excited to announce that I will soon be launching a subscription service on Facebook ✨

For a few bucks, subscribers get access to a variety of exclusive content, including:

Weekly live Q&A sessions, behind-the-scenes photos and videos, and early access to new circuits, projects and services...

Exclusive discounts and promotions and more...

I'm passionate about creating content that helps the electronics fraternity and I believe this subscription service will allow me to take my content to the next level...

If you want to subscribe then wait no more…

Thank you for your support 💞

--TK Hareendran

26/04/2024

I cast my vote before noon 👍

(Kerala Lok Sabha elections 2024)

Democracy cannot succeed unless those who express their choice are prepared to choose wisely...

The real safeguard of democracy, therefore, is education!

- -Franklin D. Roosevelt

25/04/2024

We are not what we know but what we are willing to learn 💞

We must believe that we are gifted for something, and that this thing, at whatever cost, must be attained 👍

-- Marie Curie

(image from gettyimages)

10/04/2024

Electrical & Electronics 💞 Anderson Powerpole Connectors!

Anderson Powerpole series connectors feature four housing sizes that can carry a wide range of amperage and wire sizes in the most compact footprint 👍

The series handles currents up to 350 A and wire sizes of 20 AWG (0.75 mm²) to 3/0AWG (70 mm²)...

A wide range of colored housing options can be stacked together to create a proven reliable custom connector...

These housings can be used with different contacts to create wire-to-wire, wire-to-board, or wire-to-busbar connections...

These Powerpole connectors combine high-quality materials with a cost-effective and innovative design for powerful versatility...

(Source DigiKey)

14/02/2024

Valentine's Day 2024 💞

Love is an irresistible desire to be irresistibly desired 💛

— Robert Frost

Image from a project done over a decade ago!

See my project https://www.electroschematics.com/arduino-8-8-led-matrix/

09/02/2024

Vacuum Variable Capacitor ⚡

A vacuum variable capacitor uses a high vacuum as the dielectric instead of air or other insulating material...

This allows for a higher voltage rating and/or capacitance value using a smaller total volume...

In addition to the higher voltage rating a vacuum dielectric greatly reduces the chance of arcing between the plates...

There are several different designs in vacuum variables, the most common geometry of the capacitor plates is usually inter-meshed concentric cylinders...

The meshed cylinders are contained within a glass or ceramic vacuum envelope, similar to an electron tube...

A metal bellows is used to maintain a vacuum seal while allowing positional control for the moving parts of the capacitor, Above about the Vacuum variable capacitor information content...

Learn more https://www.capacitors.hk/blog/post/Vacuum-variable-capacitor.html

Wikipedia https://en.wikipedia.org/wiki/Vacuum_variable_capacitor

(image from https://lampes-et-tubes.info/vc/vc007.php?l=e)

27/01/2024

Uno Wi-Fi Clone REVIEW!

In this post, I am going to probe the components and compatibility of a cheapest Arduino Uno Wi-Fi board you can buy for your IoT projects. The UNO

27/01/2024

WARNING ⚠ It has been noticed that a Facebook message is circulating that I am a cancer patient and need money for treatment. Obviously this is a false message and do not respond to it! (my personal email id = [email protected])

I reported this to Facebook at 1:30 PM

31/12/2023

HAPPY NEW YEAR 2024 ✨

Beloved friends, followers, fans, colleagues, relatives...

Wishing you a great year ahead 💞

New Beginnings are in order, and you are bound to feel some level of excitement as new chances come your way...

There are better things ahead than any we leave behind 🔔

ENJOY 🍂

24/12/2023

Merry Christmas ⭐

Wishing you a Christmas that rekindles the warmth of cherished memories and creates new ones to treasure...

And, hoping your Christmas is like a perfectly crafted snowflake – unique, beautiful, and bringing delight with every moment ✨

--TK

19/12/2023

Hi-Res Audio?

High-Resolution Audio (Hi-Res Audio/Hi-Res) refers to a collection of digital processes and formats that allow the encoding and playback of music using higher sampling rates than the standards used in Compact Discs (CDs)...

Hi-Res Audio brings the studio experience to the consumer, thereby presenting the music as the artist intended...

In principle, there're two basic types of digital audio - Pulse Code Modulation (PCM) and Pulse Density Modulation (PDM)...

Learn more https://www.magicbus.biz/what-is-hi-res-audio-.html

As an aside, most current digital audio systems use multi-bit PCM to represent the signal...

PCM has the advantage of being easy to manipulate...

This allows signal processing operations to be performed on the audio stream, such as mixing, filtering, and equalization...

PDM, which uses only one bit to convey audio, is simpler in concept and ex*****on than PCM...

It has become popular as a way to deliver audio from microphones to the signal processor in mobile telephones...

PDM is ideally suited for this task because it brings the benefits of digital, such as low noise and freedom from interfering signals, at low cost... (Thanks Audio Precision, Inc.)

Image: PDM Digital MEMS Microphone MP34DT01

11/12/2023

Ceramic PCB?

Yes, a ceramic PCB, also known as “ceramic hybrid circuit devices”, has become the industry’s new standard for electrical components. Although this technology was first introduced by ceramic capacitors, it is now used in many different applications!

The properties of ceramic materials used in the manufacturing process of ceramic circuit boards make them durable, reliable, and a great alternative to other electrical components...

It is not the usual ceramic we can find as house decors, potteries, or flooring, as these ceramic boards are made of high-quality industrial materials with metal cores...

They may also be called green boards, not because of the color, but because they use less toxic chemicals and have a smaller carbon footprint than their traditional counterparts...

learn more https://www.abp.net.cn/5351.html

09/12/2023

Nostalgia Reloaded 👩🏻‍🦰

(torch bulbs and holders...)

The past empowers the present, and the sweeping footsteps leading to this present mark the pathways to the future 💛

--Mary Catherine Bateson