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Course Mascots

Five mascots appear throughout this textbook, each indicating a different type of content. They help students quickly recognize what kind of information they're reading.

Rezi the Resistor — Definitions

Definition: Term

Rezi appears whenever a key term is being formally defined. Look for Rezi when you need a precise, concise definition to add to your notes.

Usage in markdown: 

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<div class="mascot rezi" markdown>
**Definition: Ohm's Law**
The relationship V = IR between voltage, current, and resistance.
</div>

Cappy the Capacitor — Tips & Notes

Helpful Tip

Cappy appears for tips, practical notes, and "good to know" insights that help build intuition. These aren't definitions — they're the kind of things an experienced engineer would tell you.

Usage in markdown: 

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<div class="mascot cappy" markdown>
**Pro Tip**
Use polar form for multiplication, rectangular form for addition.
</div>

Sparky the Lightbulb — Warnings & Cautions

Watch Out!

Sparky appears when there's a common mistake to avoid, a unit mismatch, a sign error, or a safety concern. Heed Sparky's warnings — they'll save you from hours of debugging.

Usage in markdown: 

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<div class="mascot sparky" markdown>
**Common Mistake**
Don't mix radians and degrees in the same formula!
</div>

Ohmy the Omega — Key Formulas

Key Formula

Ohmy appears to highlight the most important equations — the ones worth memorizing and understanding deeply. These are the formulas that appear on exams and in real engineering work.

Usage in markdown: 

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<div class="mascot ohmy" markdown>
**Ohm's Law**

\[V = IR\]
</div>

Fusi the Fuse — Safety

Safety Warning

Fusi appears whenever there is a real physical safety concern — electric shock hazards, high-voltage precautions, proper grounding procedures, capacitor discharge risks, and safe lab practices. Always read Fusi's safety notices before working with live circuits.

Usage in markdown: 

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<div class="mascot fusi" markdown>
**Safety: High Voltage**
Always discharge capacitors before touching circuit components. Even after power-off, large capacitors can hold dangerous charge.
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