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A solid line above a dashed line — IEC 60417-5031, indicating on a rating plate that equipment is suitable for direct current.
Also known as: DC symbol, IEC 60417-5031
Used on a rating plate to indicate that the equipment is suitable for direct current only, and to identify the relevant terminals. Conventionally printed next to the DC input rating.
Indicates on the rating plate that the equipment is suitable for direct current only, and identifies the relevant terminals.
Contexts: Electrical equipment
Is a solid line above a dashed line — not an equals sign, and not a hyphen. The solid bar is the steady current and the broken bar is drawn beneath it; on small print the pair is often mistaken for a badly kerned equals sign.
Contexts: Electrical equipment
Labels the output of a mains adaptor, the input socket of the device it feeds, and the direct range on a multimeter. Beside it the voltage and the maximum current are printed, and matching all three is what makes one adaptor a substitute for another.
Contexts: Electrical equipment
A solid horizontal line with a shorter dashed or dotted line directly beneath it.
The pair used on rating plates and power supplies to distinguish which kind of current a terminal expects.