rightpress.blogg.se - Transistor amplifier lab report

Wire the amplifier circuit following your design. Using the same signals as you will use in the laboratory. May deviate from the design specification by 10% if you do not find the requiredĬheck your design by simulating circuit performance with Multisim Obtain components from other sources, if needed. Specify component values to meet these requirements but check also the parts Gain at quiescent point between 40 and 100, specified by the instructor.R b is the equivalent resistance of the base biasing networkĭesign a common emitter amplifier following the schematic shown in the figureĪbove (for more information see ref.

Is a component of an R C filter with R in = Rb || β (R 3+r e). Select the values of C 1 and C 2 for the required.Chose R 3 for the required gain G = R C/(R E ||.Find the ratio of R 1:R 2 to put the base ~0.6V above the emitter (at.

If the transistor heats up and the emitter current increases, the voltageĭrop across R E increases, decreasing the voltage difference between theīase and the emitter, thus decreasing the current through the transistor Temperature stability comes from a negative feedback: This defines the value of R E (assume that emitter and collector quiescentĬurrents are the same).

The emitter should be biased at about 1 V to achieve temperature stability.

This defines the value of R Cįor a given collector quiescent current (with no input signal). That the output can swing both way equally.

The collector should be biased half way between ground and V CC so.

The following conditions should be established: This is achieved byĪ proper resistor network. Must be properly biased and operate in the active mode. To work properly in an amplifier circuit a bipolar junction transistor (BJT) With Multisim and comparison with measured values. Lab 3: Common Emitter Amplifier OBJECTIVESĮxperience in design of a single stage amplifier.