Power symbols and ground connections in PCB Design - Dashboard Guide

Dashboard Mode - Power symbols and ground connections

Goal

Understand how power symbols and ground connections are used in PCB design to ensure proper electrical flow and safety.

Sample Data: Common Power and Ground Symbols

Symbol Name	Symbol Image	Description	Typical Voltage	Connection Type
VCC	▲	Positive power supply	+5V	Power
VDD	▲	Positive power supply for digital circuits	+3.3V	Power
GND	⏚	Ground connection	0V	Ground
AGND	⏚	Analog ground, separate from digital ground	0V	Ground
PGND	⏚	Power ground, used for power circuits	0V	Ground
VSS	▼	Negative power supply or ground	0V or -5V	Ground

Dashboard Components

• KPI Card: Total Symbols Count - shows total number of power and ground symbols (6)
• Pie Chart: Symbol Types Distribution - shows percentage of Power vs Ground symbols
• Bar Chart: Typical Voltages by Symbol - compares typical voltages for each symbol
• Table: Detailed Symbol Information - lists all symbols with description and connection type

Formulas/Expressions

• Total Symbols Count = COUNTROWS(Symbols)
• Power Symbols Count = COUNTROWS(FILTER(Symbols, Symbols[Connection Type] = "Power"))
• Ground Symbols Count = COUNTROWS(FILTER(Symbols, Symbols[Connection Type] = "Ground"))
• Symbol Types Distribution = Power Symbols Count / Total Symbols Count and Ground Symbols Count / Total Symbols Count
• Typical Voltages by Symbol = Use Symbol Name on X-axis and Typical Voltage on Y-axis

Dashboard Layout

+----------------------+----------------------+
|      KPI Card        |    Pie Chart          |
|  Total Symbols: 6    |  Power vs Ground      |
+----------------------+----------------------+
|                  Bar Chart                   |
|         Typical Voltages by Symbol           |
+---------------------------------------------+
|               Detailed Symbol Table          |
+---------------------------------------------+

Interactivity

User can filter symbols by Connection Type (Power or Ground). When filtered:

• KPI Card updates to show count of filtered symbols.
• Pie Chart updates to show distribution within filtered set.
• Bar Chart updates to show voltages of filtered symbols only.
• Table shows only filtered symbols with details.

Self Check

If you add a filter for Connection Type = Power, which components update and what changes occur?

• KPI Card shows total power symbols (3).
• Pie Chart shows 100% Power symbols.
• Bar Chart shows voltages for VCC, VDD, and VSS.
• Table lists only power symbols with their details.

Key Result

Dashboard showing counts, distribution, and voltage details of power and ground symbols in PCB design.