Engineering Video Library
We've curated the internet's best technical videos on capacitors and added our own engineering commentary to help you navigate the noise.
Specap Brand Introductory Video
A look at Specap's commitment to precision, quality, and engineering excellence in every component we supply.
Our own production—showcasing the brand and expertise that keep industry running.
Capacitors: The basics of how capacitors work
A fantastic visual explanation of capacitor physics, covering electric fields, dielectrics, and energy storage. This comprehensive tutorial explains how capacitors store electrical energy, the role of dielectric materials, and practical applications in electronic circuits. Essential viewing for beginners and a great refresher for experienced engineers.
Key Takeaways
- Understanding electric fields in capacitors
- Role of dielectric materials in capacitance
- Energy storage formula (E = ½CV²)
- Voltage derating for reliability
Specap Expert Note
At Specap, we often recommend this video to junior engineers. Note the section on dielectric breakdown—this is exactly why we stress voltage derating in our guides.
EEVblog #165 - Capacitor Types & Usage
Dave Jones breaks down the practical differences between Electrolytic, Tantalum, Ceramic, and Film capacitors. This in-depth guide covers the pros and cons of each capacitor type, when to use each one, failure modes to watch for, and practical selection criteria for real-world circuit design. A must-watch classic for selecting the right part.
Key Takeaways
- Electrolytic vs Tantalum vs Ceramic vs Film comparison
- ESR and its impact on performance
- Tantalum failure modes and safety
- Ceramic capacitor DC bias derating
Specap Expert Note
Dave is spot on about Tantalum capacitors catching fire. If you are replacing an old Tantalum, consider using our Cross-Reference tool to find a modern Polymer replacement (KO-CAP) which is non-ignitable.
Bad Capacitor Replacement - LCD Monitor Fix
A step-by-step repair guide showing how to identify and desolder bulging electrolytic capacitors in a power supply. Learn the telltale signs of capacitor failure including bulging tops, leaking electrolyte, and ESR degradation. This practical tutorial demonstrates proper desoldering technique and capacitor replacement for power supply repair.
Key Takeaways
- Identifying failed capacitors visually
- Safe desoldering techniques
- Selecting proper replacement capacitors
- Importance of Low-ESR in switching supplies
Specap Expert Note
Notice the bulging tops on the capacitors? That is a textbook validation of the "End of Life" symptoms we describe in our failure guide. Always use Low-ESR replacements for switching power supplies.
X and Y Capacitors in Power Supplies
Why you CANNOT just use any capacitor across the mains. This safety-focused deep dive explains X-class and Y-class capacitor ratings, failure modes, regulatory requirements, and why safety capacitors are critical for mains-connected equipment. Essential knowledge for anyone working with AC power electronics.
Key Takeaways
- X-class vs Y-class capacitor differences
- Safety certifications (UL, VDE, EN)
- Why DC-rated caps fail on AC mains
- Proper EMI filter design
Specap Expert Note
This visual demo shows why X2 and Y2 ratings exist. Never assume a 600V DC capacitor can handle 120V AC mains—the transients will destroy it. Stick to certified Safety Caps.
Have you seen a great capacitor tutorial?
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