Luis Alvarez

[First Steps With Linux @fswlinux]

Quick Linux tip:

Need to create an empty file?

Most people use:

$ touch notes.txt

But you can also use shell redirection:

$ > notes.txt

If the file doesn't exist, it will be created.

A simple shortcut that saves a few keystrokes.

[jenna @unfiqt]

Dad protection is wild…how powerful dad’s love is when protection becomes instinct.

[Fitness Knowledge @Fitnessknowledg]

Home Vs Gym 🏋️💪

[Mobile Hacker @androidmalware2]

uConsole Review: A Portable Linux Cyberdeck

I have tested #uConsole since December - build, OS installs, expansion boards, and a reproducible use case

[Megatron @Megatron_ron]

NEW:

🇮🇷🇮🇱 What did Iranian engineers do?

Crazy video of Iranian missiles easily evading Israeli interceptors

[Today I Learned @TodayiLearrned]

Tips for healthy life.

[SKG @sonukg4india]

#MathExplained V154

[THE LEARNING HUB @LearningHubX]

Practical Tips 🔥👌

[1-min crafts 💡 @1_mincrafts]

Exercises to tighten your face and look more handsome

[The Figen @TheFigen_]

🤣🤣

[Craft Gallery @5min__crafts]

Making a Paper Umbrella 🌸

[Bedroom Fitness @BedroomFitnes]

6 face exercise

[Fit_Fusion @FitFusion__]

How to grow cloves and rose in one pot

[Md Ismail Šojal 🕷️ @0x0SojalSec]

Cortical CL1: Real human 800,000+ neurons on chip
already beating DQN/PPO baselines in complex tasks
with minimal training time.🤯

Adaptive learning is like a real brain.

Outperforms SOTA RL (DQN, PPO) after 5 min gameplay-style training

[THE LEARNING HUB @LearningHubX]

This is clever👏

[Electrical Knowledge @electric_4u]

Optocoupler Explained — How Engineers Safely Control High Voltage.

[ENGR FIX @engrfix1]

🔄 Ever wondered how a substation “understands” electricity?

Currents flow.
Voltages fluctuate.
Temperatures rise.
But protection relays don’t read analog waves — they read numbers.

Before a breaker trips or an alarm appears on SCADA, an invisible process converts raw electrical signals into digital intelligence.
That silent hero? Analog-to-Digital Conversion (ADC).
Let’s break it down step by step 👇

📡➡💻 From Analog Signal to Digital Decision
1️⃣ Low-Pass Filtering (Anti-Aliasing)
⚙️ Purpose: Remove high-frequency noise before sampling.
Why?
If unwanted frequencies enter the ADC, they cause aliasing — distortion that corrupts measurements.
💡 Clean input = accurate digital output.

2️⃣ Sampling
📉 The continuous analog waveform is captured at fixed time intervals.
Sampling rate matters.
Too slow → information loss.
Too fast → unnecessary data overload.
In power systems, sampling is often synchronized with system frequency (50/60 Hz).

3️⃣ Quantization
🪜 Each sampled value is approximated to the nearest discrete level.
Resolution depends on ADC bits:
• 8-bit → 256 levels
• 12-bit → 4096 levels
• 16-bit → 65,536 levels
Higher resolution = finer accuracy in current and voltage measurement.

4️⃣ Encoding
🔢 Quantized values are converted into binary form.
Example:
Analog value → Quantized level → 110010
Now the signal is no longer a waveform — it’s data.

5️⃣ Digital Output
📲 The binary stream is transmitted to:
✔ Protection relays
✔ IEDs
✔ RTUs
✔ SCADA systems
From here, algorithms detect faults, measure harmonics, calculate power, and trigger protective actions.

🧠 Without accurate ADC:
❌ Protection misoperations increase
❌ Fault detection becomes unreliable
❌ Automation decisions degrade

With precise ADC:
✔ Real-time protection
✔ Advanced fault diagnostics
✔ Accurate metering
✔ Seamless IEC 61850 integration
Every digital substation depends on clean, time-synchronized data.

⚡ From a simple CT secondary current to a breaker trip command — it all begins with precise sampling and conversion.
Next time you analyze disturbance records or SCADA logs, remember:
Behind every number lies an ADC working in microseconds.

[Khushabu Agrawal @khushabu_27]

20 Completely FREE Courses for Absolute Beginners:

1. HTML & CSS
https://t.co/oNnacc4tVg

2. JavaScript
https://t.co/887yGSItfB

3. Python
https://t.co/YJsZaZFrUH

4. Java
https://t.co/59WV6GzlDV

5. SQL & DBMS
https://t.co/jYilAKS3DU

6. C++
https://t.co/A4zWamByCQ

7. React 19
https://t.co/oOhFtlz10D

8. React Native
https://t.co/PcdWBFF0oq

9. Django
https://t.co/h3epRwtjLd

10. C#
https://t.co/nhHPKVBwtJ

11. C
https://t.co/ItMjmyKZGk

12. DSA
https://t.co/vfOtC4ejV9

13. Docker
https://t.co/tOc9OPyG2r

14. Kubernetes
https://t.co/y8xKlEHEIl

15. DevOps
https://t.co/4cBC3XZeT8

16. Data Analysis
https://t.co/dyz5svaDAK

17. Data Science
https://t.co/BYGYNGBMQz

18. Machine Learning
https://t.co/Gabc1dBIFA

19. LLM
https://t.co/XVsXjwbhVR

20. Generative AI
https://t.co/u50fXE4lPk