What would make grammatic sense: DC current or just DC, when describing type of current?

I am writing about currents like AC and DC types. AC stands for Alternating Current and DC stands for Direct Current. Would it make sense when writing if i wrote like this: "I am going to use DC current" or "I am going to use DC"? It sounds grammatically wrong when saying "DC current", because i am repeating current twice in an expanded form of DC. But when saying just "DC", it also sounds wrong, because I'm not describing what DC is.

Can you please tell me which is the correct form? Thanks for your time.

Solution 1:

As you have pointed out already, saying "DC/AC current" would mean you're repeating current twice. One wouldn't say "DC current is the one-directional flow" but rather, "DC is the one-directional flow".

A (probable) reason why the second sentence sounds weird is because is because, technically, you wouldn't say you're using DC but instead you're using a DC source.

"I am going to use a direct current (DC) source."

Update

Did some extra research, because Physics isn't really my area of expertise. According to Wikipedia:

The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.

This means that it is, in fact, socially acceptable to say "DC current" & "AC current" despite its redundancy.