VDC is a three-letter abbreviation with multiple meanings, the most common is volts (V) of continous current (direct current (DC)), in contrast to VAC.

Note: Care must be taken not to connect DC devices (such as DC electrical motors) to alternating current (AC) sources, as DC devices can be seriously damaged by doing so. Also, the voltage number itself is most important, as a device must never be connected to a power supply generating a higher voltage than the device is rated to handle. This may happen either by using a too powerful supply, or with a variable power supply with the voltage switch set incorrectly

Other uses include:

• VDC is used as an acronym for "Video Display Controller", as with the 8563 VDC and 8568 ^*VDC computer graphics chips of the 1980s.
• Virtual Digital Cable, or VDC, an acronym for a media and technology company delivering Television to the Desktop.
• The Victoria day celebration.

Electrical engineering

VDC