Electrical Ground Symbol
Schematic symbol representing an electrical connection to earth ground.
International · c. 1900 – present
ANSI
ANSI oversees the creation, promulgation, and use of thousands of norms and guidelines in the United States.
4 symbols in this standard
Resistor Symbol
Schematic symbol representing an electrical resistor in circuit diagrams.
International · c. 1920 – present
Capacitor Symbol
Schematic symbol representing an electrical capacitor in circuit diagrams.
International · c. 1920 – present
Power Symbol (IEC 5009)
Standardized symbol for power on/off controls on electronic devices.
International · c. 1970 – present