WHY IS IT CALLED VCC? The positive voltage symbol is…
““WHY IS IT CALLED VCC? The positive voltage symbol is called VCC because of old naming conventions. VCC was the voltage supplied to the collector side of a transistor in common transistor circuits, usually through a resistor or some other components. The collector is where the “CC” comes from. You’ve used a bipolar junction transistor throughout this book, but there’s another type of transistor called a field-effect transistor (FET). The pin that equals the collector on this type of transistor is called the drain, so the voltage that was supplied to the drain side of the FET was called VDD.””
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
VCC and VDD are historical labels for power supplies in transistor circuits, reflecting collector and drain connections.
In simple terms: VCC = collector power, VDD = drain power.
Key Takeaway
Know the naming conventions for circuit design.
Themes
electronics
history
design
Mood
technical
educational
Type
instructional
clarifying
When to use this quote
- circuit design
- education
- documentation
- troubleshooting
Key Concepts
electrical engineering
nomenclature
Questions to Reflect On
- Why retain legacy terms?
- How can you explain them to beginners?
A Different Perspective
Older terms may confuse modern designers; ensure clarity.