ETech47

The Logical Path to PCB Revival:
A 5-Step Diagnostic Protocol

This specialist's diagnostic framework details a logical sequence from initial inspection to final stress testing, ensuring reliable and long-lasting fixes for faulty PCBS

1. Visual Triage

Perform a high-magnification inspection for bums, bulging capeciters, or слитоsion.

2. Power Rail Audit

Trace input voltage through Pulses and regulators to ensure stable power



3. Short-Circuit Detection

Use thermal analysis and a mallineler to colate snorted, overheating composents

DOO

4. Signal Integrity & Logic Check

Use an oscilloscope to verify crystal oscilators and communication signals (CSR)

5. Post-Repair Stress Testing

Run the board under a full food to validate thermal stability and reliability

"A precise repair isn't just a fix-it's an investment."

This systematic approach minimizes costly downtime in industrial electronics.

4 days ago | [YT] | 3

ETech47

Ever wondered

Why Ceramic Capacitor is Used in DC Motor DC motors generate electrical noise due to brush commutation and internal switching.

These rapid changes create high-frequency interference and voltage spikes that can affect nearby electronic circuits, especially microcontrollers and communication modules.

A ceramic capacitor connected across the motor terminals acts as a noise suppressor.

It absorbs unwanted high-frequency signals and smooths sudden voltage variations, ensuring stable operation and protecting sensitive electronics.

Ceramic capacitors are preferred because they are non-polarized, fast-responding, compact, and highly reliable-making them ideal for motor noise suppression applications.

Соттоп саpacitor values: 0.01 µF - 0.1
µF (103,104) #Etech47

6 days ago | [YT] | 1

ETech47

OLED Display Transparent

1 week ago (edited) | [YT] | 0

ETech47

Types of Tapes used in industry

1 week ago | [YT] | 0

ETech47

Power Supply
Rectifiers
Transistors
FETs
Formulas & Laws

2 weeks ago | [YT] | 2

ETech47

AESA radars have turned into a playground for high‑frequency electronics. The big jumps are:

GaN‑based transmit/receive modules
Each element now packs a power‑amp, low‑noise receiver and phase shifter on a single chip. That drives higher output power (tens of watts per element) while keeping the footprint tiny.

LTCC/HTCC packaging
Multilayer ceramic substrates let designers stack RF lines, biasing and thermal vias in a compact 3‑D stack, which cuts loss and improves heat flow.

Digital beamforming ASICs
Modern FPGAs/ASICs handle thousands of phase‑weight calculations in real time, enabling adaptive nulling and multi‑beam operation without mechanical steering.

Wide‑band RF front‑ends
Using SiGe or CMOS processes, the front‑end can hop across X‑, Ku‑ or even Ka‑band, giving a single aperture the flexibility to switch modes on the fly.

Integrated sensing & AI
On‑chip ADCs feed raw I/Q data to embedded neural‑net accelerators, letting the radar classify targets at the edge rather than off‑loading to a remote processor.

All of these electronic breakthroughs translate into radars that are smaller, lower‑power, more reliable, and capable of doing things legacy phased‑array systems never could.

2 weeks ago | [YT] | 4

ETech47

Inductor
Important Formulas

2 weeks ago | [YT] | 3

ETech47

CT Vs PT

2 weeks ago | [YT] | 0

ETech47

Types of Integrated circuits (IC)
AnalogIC
Digital IC
Mixed Signal IC
Power IC
RF IC
System-on-Chip (SoC)

3 weeks ago | [YT] | 0

ETech47

PCB layout Rules (ESP32 Custom PCB)
Power Traces (3.3v/Gnd)
Signal Traces (GPIO,UART, I2C, SPI)

3 weeks ago | [YT] | 0