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Electronic Components Blog | Selection Guides & Industry News
CD4017 Decade Counter IC: Working Principle, Pinout, and Applications
Learn how the CD4017 decade counter IC works, pin functions, sequential output control, 555 timer integration, LED chaser circuits, and troubleshooting tips.
Bêl 29 2026
Cathode Ray Oscilloscope (CRO): Working Principle, Measurements, Specifications, and Uses
Learn how a Cathode Ray Oscilloscope (CRO) works, CRT construction, voltage/time measurement, trigger controls, specifications, and CRO vs DSO comparison.
Bêl 29 2026
Capacitor Polarity: Positive vs Negative, Stripe Markings, and Multimeter Testing
Learn how to identify capacitor polarity: positive vs negative terminals, stripe markings on aluminum vs tantalum capacitors, PCB symbols, and multimeter testing.
Bêl 28 2026
Canister Purge Valve: How It Works, Common Problems, and Testing 
Learn how a canister purge valve works in the EVAP system, common failure symptoms (rough idle, hard start, fuel smell), OBD2 codes, and how to test it.
Bêl 28 2026
Best Arduino Hardware Simulators for Circuit Design and Embedded Development
Compare the best Arduino simulators: Tinkercad for beginners, Wokwi for ESP32/IoT, and Proteus for professional PCB workflow. Learn features and selection tips.
Bêl 27 2026
AMS1117: Regulator Pinout, Circuit, Capacitors, and Common Problems
Learn how to use the AMS1117 linear voltage regulator (3.3V/5V/ADJ), pinout diagram, circuit design, capacitor requirements, heat dissipation, and troubleshooting.
Bêl 27 2026
AAA Batteries: Types, Specifications, Uses, and Troubleshooting Tips
Compare AAA battery types: alkaline (LR03), lithium (FR03), carbon zinc (R03), and rechargeable NiMH (HR03). Learn voltage, capacity, best uses, and common problems.
Bêl 26 2026
A940 PNP Transistor: Pinout, Specifications, Uses, and Equivalents
Learn about the A940 (2SA940) PNP transistor: TO-220 pinout, voltage/current ratings, audio amplifier and switching applications, equivalents, and replacement tips.
Bêl 26 2026
100 Ohm Resistor: Color Code, LED Uses, Power Calculation, and Testing
Learn how to use a 100 ohm resistor for LED current limiting, GPIO protection, and signal damping. Includes color code (brown-black-brown), power calculation, and multimeter testing.
Bêl 25 2026
16x2 LCD Display Module: Pinout, Wiring, Arduino Setup, and Applications
Learn how to use a 16x2 LCD display with Arduino, 4-bit vs I2C wiring, pinout, code examples, custom characters, and common troubleshooting tips.
Bêl 25 2026