Electronics Laboratory Report.

testing ground Long report. Electronic science lab practice Abstract The aim of this laboratory was to make up us familiar with how to use the disparate types of electronic equipment and how to accurately use them to make measurements. The equipment utilize in this laboratory included (i) the steer generator which was utilise to generate the power used in the heterogeneous single- note valued functions, (ii) The oscilloscope which was used to view and record the waves produced from the AC currents and then make relevant calculations based on that. iii) The DC power supply was used in the first two procedures which involved development the resistors. (iv) Familiarised with the mul clockter and used it to take measurements (v) the examine board which was used to do create nigh of the circuits and take the needed measurements. occasion 1 The measurement of resistance. The resistances of the 5k? and 22k? resistors were anchor use the theory and by taking the actual rea dings. The resistances of the resistors were first metrical by comparing the colorize bands on the resistors to the colour code chart provided.The procedure for this is there are four bands on each of the resistors, and each colour on the band denotes a specific number on the resistor colour code chart, which gives us the strong look-alike and the multiplier which is in powers of 10. The set exploitation the colour code were reason and found to be as follows. * 5. 1k? with a 5% permissiveness * 21k? with 10% tolerance. These nominal value are the ones that are calculated but in reality the actual set of resistance can be a bit polar from the ones calculated due to impurities.The actual resistances are measured by using a multimeter, the way this is done is that the resistors are mounted on an experiment board and then the multimeter is connected right across it. The values were record and found to be as follows * 5. 037k? * 21. 047k? Nominal value Actual value 5k? resist or 5. 1k? 5% tolerance 5. 307k? 22k? resistor 21k? 10% tolerance 21. 047k In conclusion, it can be seen that there was a divergency in the calculated nominal values of the resistors and the actual ones which were calculated. merely they were still within their tolerance levels there could be plenty of reasons for that which might include different types of batteries, differences in temperature of the room, impurities in different sections of the experiment board which might have affected the readings. The tolerance level is defined as an allowable variation from a predefined standard. A value from an experiment or a variance is not considered significant unless it exceeds the limit set by the tolerance limit. www. bridgefieldgroup. om/bridgefieldgroup/glos9. htm For this reason, we can assume these differences in the actual values of the resistors to be insignificant since they were within the stated tolerances. Procedure 2 The measurement of potential difference. In this expe riment, the belief was to create a electromotive force rail-splitter circuit and to carry out the required measurements were undertaken to prove the principle of the voltage divider. For that, a circuit was created where a supply voltage was apply across two resistors R1 and R2 in series as shown in the figure below.And the two equations shown below were used to make the necessary calculations. Image offset http//www. ermicro. com/blog/wp-content/uploads/2008/11/basic_r01. jpg http//diy. griffshp. com/wp-content/VoltageDivider. jpg The experiment was carried by using two resistors of values R1 equal to 5k? and R2 equal to 22k?. The resistors were mounted on the experiment board and the voltage divider circuit was created. The power was supplied using a +6v power supply and the voltages across each of the resistors was calculated using the Agilent 34401 multimeter.The values were recorded and were found to be as follows V1=1. 1846v V2=4. 89v The total of the voltages adds up to be 6. 0167v which is roughly round 6v ( the initial voltage supplied) which proves that the voltages are within the required tolerance. To compare these measured values to the nominal values which can be found using the voltage divider equation, substitute the values of R1 and R2 and use V as 6v to find the voltages across each of V1 and V2. v1=6*55+22=1. 11v * V2=6*225+22=4. 88v Nominal values Actual values V1 1. 11v 1. 1846v V2 4. 88v 4. 89v In this experiment it was found that the actual values and the nominal vales were not much different from each other. This could have probably been because of the resistances in the wires or loose connections. But they were both within a tolerance level of 5% which makes the difference insignificant and accountable for experimental error.The outcome of the experiment was that the voltages were shared surrounded by the two resistors and the larger resistor got the larger share of the voltage whereas the little resistance got the showed smal ler voltage passing through it. This proved the values that we found using the nominal calculations of the voltages. Procedure 3 current measurement. In this experiment, we use the current divider rule which is similar to the voltage divider equation except that the way the circuit is constructed is it is in parallel rather of series.The experiment was set up in the method shown below and the necessary calculations were made. The circuit was constructed as shown in the schematic above and a DC voltage of +6v was passed through it, the currents were measured in each of the resistors and found to be * I1(current across 5k? ) =1. 182A * I2(current across 22k? )=1. 192A (Ps The rest of the rest of the report could not be completed since the original lab was not completed on time and hence the required information was missing. ) Table of Contents 1. Procedure 1 2. Procedure 2 3. Procedure 3