Probly sometime in the 1800's but not really sure...
Nikola Tesla invented the poly-phase induction motor in 1883.
No In 1859 Gaston Plante, a French physicist invented the first rechargeable battery
Willis Haviland Carrier is wrong he invented the air conditioner AC is an electrical current invented by Nikola Tesla. Thomas Edison who invented DC, used AC to make an electrical pad, killed cats and dogs to ruin Tesla because he wanted to prove it was dangerous, but DC is more dangerous.
Nikola Tesla invented AC, probably a transformer as well but don't quote that.
Electricity was not invented by anyone but God. Man have been working on it since ancient time. Nikola Tesla invented his system to reproduce electricity in an alternate mode call ac current.
nikola tesla
Nobody invented sandstone it is a naturally ac curing substance in the earth.
Lockheed and Boeing
Nikola Tesla invented the poly-phase induction motor in 1883.
He invented it in 1888.
the AC electric generator was invente by Nikola Tesla. He invented in the late to early 1800's and 1900's. This idea was recently accepted by scienctists.According to the website linked below, it was invented in 1663.
No In 1859 Gaston Plante, a French physicist invented the first rechargeable battery
It was first invented in 1803 by Dr. John but it kept advancing in time by other people
AC electric pump with no moving parts.
he invented the churn in 1891
AC Richardson
The AC'97 codec was invented by computer giant Intel as a mean of decoding, recoding and producing high quality audio streams at a reduced processor usage.