AC/DC

AC/DC is an Australian rock band formed in 1973 by brothers Malcolm and Angus Young. They are often labeled as "hard rock" or "heavy metal" but the band likes to say they are just rock and roll.

Their first album, High Voltage, was released in 1976 and points to the band's name origin. The Young brothers said they came up with the name after their older sister noticed the initials "AC/DC" on a sewing machine and they knew it had something to do with power, which seemed appropriate.  thought it had something to do with power. It does mean "alternating current/direct current." The band used it, not realizing it was also slang for bisexual. The band claims NOT to be bisexual. They also denies that it stands for Against Christ/Devil's Children.

By Gerard Huerta - Official websitePNG of the logo, Public Domain, Link

Their logo is the letters with a lightning bolt as the center slash. It was designed in 1977 by Gerard Huerta. It first appeared on the international version of Let There Be Rock. 

Most people say the band's name as A, C, D, C but, according to Wikipedia, the band is also known as "Acca Dacca" in Australasia.

By Ed Vill from Caracas, Venezuela - AC/DC Black Ice Tour 2009 Buenos Aires 4 de Diciembre, CC BY 2.0, Link

For Those About to Rock We Salute You
Backtracks (2CD+DVD)
Who Made Who