Analog Circuits

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It is necessary to complete the course work safety AE2M17BP3 (in English) for the opportunity to attend this course labs. AE2M17BP3 course dates for this year will be .....  Contact to the lecturer: .... (...@fel.cvut.cz).

It is necessary to work up three laboratory tasks. Detailed instructions for measurement tasks including scoring is given in the instructions on measuring, see. program of exercises. Homework is necessary to achieve the full number of points. Homework consists of calculation and simulation required (measured) values and recording them to a laboratory notebook. In the absence of homework instructor may withhold up 2 points from the assessment task.

Students measure the task individually eventually in pairs (max. two student per workplace), which are prepared in advance. At the end of the laboratory exercises, each student transfer the diary with the measured and processed data to instructor. Instructor will score it and give back to students at the beginning of the next measurement (seminar).

Valid measured and calculated values are scored. It should be noted that for the tasks it is necessary to calculate required results from the measurement data and compare them with expectations. If the results do not meet expectations, the student can immediately consult the measurements with the teacher and any errors corrected. This avoids poorly measured data and forcing students to think of the results already in their measurements. Measuring dependence (characteristics) is need to be done effectively - the desired characteristics can be usually constructed from two or three appropriately points.

Scoring is noted for each task in the laboratory instructions. Maximum score of four laboratory measurements is 4+2+4+5=15 points.

The circuit corresponds to the laboratory kit of single-stage amplifier with bipolar transistor. The parameters of the amplifier as voltage gain, input resistance, etc. in middle frequency band can be found using dynamic AC analysis. Low and high cut-off frequency can be determinate from the frequency response (AC analysis). Time response can be found by transient analysis.

The aim of the measurement is to introduce the functions and key features of amplifier with bipolar transistor. The main tasks are verifying the operating point position and finding the corresponding important parameters for AC excitation by relatively small signal (the value of the gain, input and output impedance).

It is required to be prepared ie. read the manual and study of the circuitry. The measurement board is designed for several possible connections. Therefore student should orient in the circuitry. As preparation is necessary to prepare the table for the measured and calculated values. Also it is necessary to fill the tables in by the expected values (simulated and calculated - ie. from seminars). Tutor will inspect your preparation in notebooks before beginning of a laboratory. If the preparation will not be adequate, the studens may assign one negative point or two negative points if the preparation absent.

From the measured values it is necessary to calculate the appropriate parameters immediately and compare it with the expected (simulated) values. In case of discrepancy it should be measured again or ask tutor for help.

The aim of the measurement is to introduce the functions and key features of amplifier with unipolar transistor. The main tasks are verifying the operating point position and finding the corresponding important parameters for AC excitation by relatively small signal (the value of the gain, input and output impedance).

It is required to be prepared ie. read the manual and study of the circuitry. The measurement board is designed for several possible connections. Therefore student should orient in the circuitry. As preparation is necessary to prepare the table for the measured and calculated values. Also it is necessary to fill the tables in by the expected values (simulated and calculated).   Tutor will inspect your preparation in notebooks before beginning of a laboratory. If the preparation will not be adequate, the studens may assign one negative point or two negative points if the preparation absent.

From the measured values it is necessary to calculate the appropriate parameters immediately and compare it with the expected (simulated) values. In case of discrepancy it should be measured again or ask tutor for help.

The picture shows two frequency-dependent networks (two-ports). Analyze these networks (frequency filters) using the Micro-Cap in frequency and time domain. Determinethe frequency response (module and phase), unit step response and,where appropriate impulse response.Change the values ​​of resistors in the first network and follow the changes in its behavior.Discussthe possibility of using these networks for oscillator circuit with OpAmp.

Use also Maple program with PraCAn package for analyses or our web interface (the file is alsoprovided).