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.
A home pregnancy test is a quick and easy way for a woman to find out if she might be having a baby. The do-it-yourself kits, which are sold over-the-counter at drug stores, grocery stores and discount stores, check a woman's urine and can detect a pregnancy in its early weeks not long after she misses her period.