Calculate the ac power delivered to the 8-Ω speaker for the circuit shown above. The circuit component values result in a dc base current of 6 mA, and the input signal (Vi) results in a peak base ...

Solid-state ac supplies replace motor-generator and tap-changing transformers to offer the same tests at the push of a button • Solid-state ac-power sources combine the variable-frequency and ...

Elsco Transformers reports that choosing the right transformer size involves calculating kVA based on voltage and current for ...

Several companies are working on technologies that could replace large traditional power transformers with power semiconductors and smaller transformers mounted on circuit boards. Although they are ...