Amplifier voltage swing

Leave this dialog box open as we will need it again in a few moments. 

Since this simulation will run for a long time and we have specified a small Maximum Step Size, a lot of data will be collected. PSpice normally collects voltage data at every node and current data through every circuit component This results in a large Probe data file that can take a long time to load and may cause memory problems. Since we are interested only in the input and output voltages, we will tell PSpice to collect data only at the input and output nodes, which will be marked with markers. 

We will first change the setup to collect data only at markers and to display those waveforms when Probe starts. Click the LEFT mouse button on the Data Collection tab of the Simulation Settings dialog box  

We only want to collect voltage data at nodes indicated by markers. Change the settings as shown below  

we want to specify that when Probe starts, it should display all waveforms specified by markers. Click the LEFT 

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Use the Transient Analysis to observe an amplifier s voltage swing. 

The efficiency of a cavity power amplifier (PA) depends primarily on the RF plate voltage swing, the plate current conduction angle, and the cavity efficiency. Cavity efficiency is related to the ratio of loaded... 

Just putting the information on the bus is not so simple. Address and data drivers, which isolate and amplify the signals, are required. Driving a highspeed, well-adapted bus requires a lot of power because of the low impedance (below 100 Q) of the transmission lines. TTL circuits have been replaced by special low-voltage swing drivers in... 

To complete this section, a sample power-output calculation is provided for the class A amplifier operation described by Fig. 5.14. The peak-to-peak swings of the output voltage and current along the AC load line are, respectively, Avp = (320 - 190) = 130 V, Aip = (49 - 9) = 40 mA. The output-signal power ( o) is, thus... 

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