| Term |
Graphical Symbol |
| |
in full |
simplified |
| Type of voltage and current |
|
|
| direct voltage |
|
|
| direct current |
|
|
| alternating voltage, alternating current |
|
|
| alternating voltage within the range of audio frequency |
|
|
| alternating voltage within the range of high frequency |
|
|
| direct or alternating voltage |
|
|
| Alternating current connections |
|
|
| star connection |
|
|
| delta connection |
|
|
| star-delta connection |
|
|
| zig-zag connection |
|
|
