EMRFD Message Archive 10164
Message Date From Subject 10164 2014-07-20 15:57:25 harizyacine transistor amplifier
Please, I am looking for simple transistor amplifier circuit conducts and amplifies only one half of the input cycle without diode, is it possible ?
10165 2014-07-21 09:37:09 peter_dl8ov Re: transistor amplifier Thinking about the theory a Class B amplifier would probably do this. By altering the bias the transistor will amplify a full cycle (Class A), a half cycle (Class B) or less than a half cycle (Class C). Try this for a better explanation:
10166 2014-07-21 09:37:53 Thomas Stout Re: transistor amplifier What you are looking for is a Class B amplifier. You will need to bias it so that it only conducts for the half-cycle that you are looking to amplify. 10167 2014-07-21 16:58:21 harizyacine Re: transistor amplifier
Hi, thank you for your reply, if you add more explication you mean class B can amplifies half signal cycle only and biasing transistor can remove side of the signal and about the signal where ever it’s size was ?
10168 2014-07-21 19:38:16 Will Re: transistor amplifier
Yes within reason/overloading. If the transistor is biased so it barely conducts. When signal goes one way it will completely cut off so no conduction and thus no gain. When signal goes other way it will bias transistor on to greater or less amount depending on the amplitude. That will produce gain in circuit, on just the one half of the signal.That's the nub briefly.Cheers