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.
No special preparation is needed. The test involves urinating into a cup or onto a test strip. Urine HCG tests are a common method of determining if a woman is pregnant. The best time to test for pregnancy at home is after you miss your period. The test is negative if you are not pregnant.