Electrical and Electronic Engineering laboratory logbook and report Essay

Electrical and Electronic Engineering laboratory logbook and report - Essay Example This arrangement determines the direction of conventional current or electron flow and the polarities of any voltages applied. Concerning the direction of conventional current flow, the arrow at the emitter terminal of the transistor representation for both types of transistors points towards the direction of conventional current flow and therefore offers an important reference. The methods of determining the type of transistor and material used to make it are demonstrated in this experiment including how to identify the three terminals of a transistor (Gates 2012). Transistors are categorized according to: type (PNP or NPN); material used (silicon or germanium); and major application (high frequency, switching or high and low power). Most transistors are labeled with a number used to identify them. They are packaged into different sizes and configurations depending on application requirements. Transistor packages protect them, provide a means of making electrical connections to the three terminals, and act as heat sinks preventing heat damage. The relationship between the currents and the voltages related to a transistor under different conditions of operation determine its performance. These relationships are collectively known as the characteristics of the transistors. These characteristics are published by the manufacturer of a particular transistor in a specification sheet that accompanies the device when purchased. One of the objectives of this laboratory experiment is to experimentally measure these characteristics of transistors and compare them to their published values (Kal 2003). A transistor acts as an amplifier; the basic function of the device is to switch a signal or to provide current amplification of the signal. For this purpose to be achieved, the transistor must be correctly biased by external voltages so that the base, emitter, and collector terminals interact in the

Electrical and Electronic Engineering laboratory logbook and report Essay

Electrical and Electronic Engineering laboratory logbook and report - Essay Example This arrangement determines the direction of conventional current or electron flow and the polarities of any voltages applied. Concerning the direction of conventional current flow, the arrow at the emitter terminal of the transistor representation for both types of transistors points towards the direction of conventional current flow and therefore offers an important reference. The methods of determining the type of transistor and material used to make it are demonstrated in this experiment including how to identify the three terminals of a transistor (Gates 2012). Transistors are categorized according to: type (PNP or NPN); material used (silicon or germanium); and major application (high frequency, switching or high and low power). Most transistors are labeled with a number used to identify them. They are packaged into different sizes and configurations depending on application requirements. Transistor packages protect them, provide a means of making electrical connections to the three terminals, and act as heat sinks preventing heat damage. The relationship between the currents and the voltages related to a transistor under different conditions of operation determine its performance. These relationships are collectively known as the characteristics of the transistors. These characteristics are published by the manufacturer of a particular transistor in a specification sheet that accompanies the device when purchased. One of the objectives of this laboratory experiment is to experimentally measure these characteristics of transistors and compare them to their published values (Kal 2003). A transistor acts as an amplifier; the basic function of the device is to switch a signal or to provide current amplification of the signal. For this purpose to be achieved, the transistor must be correctly biased by external voltages so that the base, emitter, and collector terminals interact in the

Electrical and Electronic Engineering laboratory logbook and report Essay

Electrical and Electronic Engineering laboratory logbook and report - Essay Example This arrangement determines the direction of conventional current or electron flow and the polarities of any voltages applied. Concerning the direction of conventional current flow, the arrow at the emitter terminal of the transistor representation for both types of transistors points towards the direction of conventional current flow and therefore offers an important reference. The methods of determining the type of transistor and material used to make it are demonstrated in this experiment including how to identify the three terminals of a transistor (Gates 2012). Transistors are categorized according to: type (PNP or NPN); material used (silicon or germanium); and major application (high frequency, switching or high and low power). Most transistors are labeled with a number used to identify them. They are packaged into different sizes and configurations depending on application requirements. Transistor packages protect them, provide a means of making electrical connections to the three terminals, and act as heat sinks preventing heat damage. The relationship between the currents and the voltages related to a transistor under different conditions of operation determine its performance. These relationships are collectively known as the characteristics of the transistors. These characteristics are published by the manufacturer of a particular transistor in a specification sheet that accompanies the device when purchased. One of the objectives of this laboratory experiment is to experimentally measure these characteristics of transistors and compare them to their published values (Kal 2003). A transistor acts as an amplifier; the basic function of the device is to switch a signal or to provide current amplification of the signal. For this purpose to be achieved, the transistor must be correctly biased by external voltages so that the base, emitter, and collector terminals interact in the

Review of manuscript Essay Example | Topics and Well Written Essays - 750 words

Review of manuscript - Essay Example Previous studies had suggested that many pests show an increase in population growth in a host crop which is nitrogen enriched. The current research was done in an area measuring 150m by 32m in New South Wales. It used four different treatments which were applied to the trial plot by means of broadcasting methods. I hereby confirm that this particular manuscript has not been published anywhere or considered by any other journal. I have approved the manuscript and agreed to its submission. I would like to thank the editor and the reviewer for the informative and instructive comments they made. The comments have greatly improved the manuscript. I look forward to the journal’s response. In the study that was carried out, it was quite apparent that the statistical power was dependent on factors that included the statistical significance criterion, the management of the effect of interest and the sample size used. In order to limit the Type I error, which may result from these factors, the data was collected in five transects with each being divided into four replicates. By creating transects and replicates, it was possible to limit the occurrence of type I error while at the same time ensuring that the reliability of the data was enhanced. The higher the number of transects, the lower the probability of Type I occurring in the study. In the ANOVA analysis, the main assumptions made were related to the normality and the homogeneity of the data collected in the study. It was assumed that normality and constant variance would be present in the data. To check the assumptions, a classical parametric procedure involving the detection of the outliers was used. Since outliers have the potential of impacting on and influencing the homogeneity of the data variance, it was checked to ensure that the assumptions made were inherent in the data. The method for checking