VCC, which stands for Voltage, Common Collector, is always positive with respect to ground (GND).
Here's why:
- Power Supply: VCC is typically the positive terminal of a power supply.
- Reference Point: Ground (GND) is the reference point for all voltages in a circuit.
- Voltage Potential: VCC represents the voltage potential at the positive terminal of the power supply.
Therefore, VCC is always considered positive because it has a higher voltage potential than ground.
Examples:
- 5V Power Supply: In a circuit powered by a 5V power supply, VCC would be +5V, while GND would be 0V.
- 12V Battery: If you use a 12V battery, VCC would be +12V, and GND would be 0V.
Practical Insight:
Understanding the polarity of VCC is crucial for proper circuit design and operation. Connecting VCC to a negative terminal or GND to a positive terminal can damage components or lead to unexpected behavior.
