Lab Work on Electronics Официальный сайт УНЦ ОИЯИ

Lab Work on Electronics

The Lab Work on Electronics is aimed at hands-on acquaintance with the main radio-electronic components. Unlike other engineering lab works, this one includes minimum equipment requirements: a signal generator, an oscilloscope, a tester, and a soldering iron as the main tool. Students do not work with specially designed training models, but with real radio components: resistors, capacitors, diodes, transistors, etc. The Lab Work begins with an introduction to the main elements — resistance / capacitance / inductance. Afterwards, filters, semiconductors (diodes, transistors) are studied. The course ends with assembling a simple preamplifier for a particle detector. 

Prerequisites:

  • basics of mathematical analysis, linear algebra and analytic geometry
  • basics of physics: metric prefixes, basics of electricity
  • basics of computer knowledge: MS Windows, MS Office
  • appropriate glasses/lenses if the student has poor eyesight: the training includes work with small elements



Before starting the Lab Work, students are required to do the safety (work with a soldering iron, bare low-current live conductors, fluxes and solder) and fire safety training. 

List of Lab Works:

1. Introduction to the equipment. Soldering basics

Result: skill of work with a multimeter, an oscilloscope, a signal generator and a soldering iron 

2. Introduction to the basic radio components

Result: skill of calculation and soldering of the passive component circuits 

     

3. Calculation of parameters for high-, mid- and low-pass filters

Result: skill of calculating and constructing the frequency filter with required parameters (cut-off frequency, load, amplitude)

4. Study of semiconductor properties

Result: hands-on skill of work with diodes: general idea of the p-n-junction, diode test using a multimeter, cathode and anode finding, diode applications (signal amplitude limitation, reverse current liquidation, diode bridge etc.) 

5. Calculation of stage transistor amplifiers

Result: skill of calculating and constructing the stage transistor amplifier (with a common emitter (CE), with a common collector (CC) and cascades combination by DC and by AC) with required parameters (current and voltage gain, input and output resistance, direct and differential currents). Understanding of the distinction between the stage types. Skill of visual defining the cascade type at the circuit. 

 

 

6. Calculation and construction of the preamplifier with a common base for a cosmic rays detector

 

Result: skill of calculating and constructing the preamplifier based on stage transistor amplifier with a common base (CB) and previously examined stage types (with a common emitter and a common collector). Understanding of the direct currents from the bipolar supply and differential currents in the preamplifier circuit. Skill of working with the real equipment: charge-sensitive amplifier circuit debugging and testing with the real cosmic rays detector.

Full course is designed for 1,5 weeks. However, lab works duration highly depends on student's level and basic skills. Depending on that the amount of the lab works in the course may vary. It is also possible to shorten the course by removing some lab works.