A transistor that is manufactured to suit the purpose of power amplification is called as a Power transistor.Ī Power transistor differs from the other transistors, in the following factors. The DC power is distributed according to the relation,ĭC power input = AC power output + losses Power Transistorįor such Power amplification, a normal transistor would not do. Besides raising the power level, it can also be said that a power amplifier is a device which converts DC power to AC power and whose action is controlled by the input signal. While the voltage amplifier raises the voltage level of the signal, the power amplifier raises the power level of the signal. This is clearly shown in the below figure. Power AmplifierĪfter the audio signal is converted into electrical signal, it has several voltage amplifications done, after which the power amplification of the amplified signal is done just before the loud speaker stage. If we consider audio amplification, it has several stages of amplification, depending upon our requirement. In practice, any amplifier consists of few stages of amplification. Emitter Follower & Darlington Amplifier.Transformer Coupled Class A Power Amplifier.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |