Category: Lectures & Presentations
-
RC coupled amplifier at high frequency, Lecture XXIV and XXV.
In our last lecture we discussed the case of a single stage RC coupled amplifier, a common emitter transistor circuit. for its response at low frequencies, i.e. frequencies that are less than 50 Hz. Today we will discuss what changes are going to be effected in the same circuit when we pass signal at high…
-
RC coupled amplifier and its low frequency response, Lecture-XXIII.
In our last two lectures we discussed in much detail the case of the single stage common emitter RC coupled amplifier. There we discussed the elements of the circuits (such as why a given capacitor is required and so on), determined the currents in various components (such as base and collector) and eventually calculated the…
-
Single stage CE amplifier, Lecture-XXI and XXII.
In the discussions of the BJT so far we have discussed, their construction and working. It has been mentioned earlier that the BJT is capable of 2 functions, namely switching and amplification. It works under 3 regions of operations: active region which lies between the reverse-reverse biased cutoff region and forward-forward biased saturation region. In…
-
Transistor biasing, Lecture-XIX and XX.
Transistors operate as amplifiers when external DC supply voltages are used and a desired current IC is produced. The control voltage or current are known as “BIAS”. Usually we need two biasing DC sources, one in the input circuit and one in the output circuit. But this is inconvenient and costly. We can instead use…
-
Load line analysis of transistor, Lecture-XVIII.
In the last few lectures we discussed in some detail the construction and working of the bipolar junction transistors, their characteristics and various configurations. Briefly we touched upon the subject of various regions of operation of the BJT. Today we will extend our discussion into whats a load line for a transistor and in doing…
M Dash Foundation: C Cube Learning 