This article gives a brief historical review of the evolution of power electronics over the past 100-plus years. It includes electrical machines, mercury-arc rectifiers, gas tube electronics, MAs, power semiconductor devices, converter circuits, and motor drives.
Gender Prediction Test. Intelligender is an at-home gender test that uses a urine sample from the mother. It can be given as early as 10 weeks into pregnancy and as late as 34 weeks. It is done completely at home. Laboratory tests have proved over 90 percent accurate, with at-home tests proving up to 82% accuracy.
Ovulation home test. An ovulation home test is used by women to help determine the time in the menstrual cycle when getting pregnant is most likely. The test detects a rise in luteinizing hormone (LH) in the urine. A rise in this hormone signals the ovary to release the egg. This at-home test is often used by women to help predict when an egg release is likely.