1 / 19

AC Measurements: Meters, Oscilloscopes, Counters, and Bode Plotters

Learn about the types of meters, meter movements, and the function of an oscilloscope. Discover how to properly set up an oscilloscope and take measurements. Understand how frequency counters and Bode plotters work.

williampwilliams
Download Presentation

AC Measurements: Meters, Oscilloscopes, Counters, and Bode Plotters

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 13 AC Measurements

  2. Objectives • After completing this chapter, you will be able to: • Identify the types of meters available for AC measurements • Identify the types of meter movements used to make AC measurements • Explain the function of an oscilloscope

  3. Objectives (cont’d.) • Identify the basic parts of an oscilloscope and explain their functions • Demonstrate the proper setup of an oscilloscope • Describe how to use an oscilloscope to take a measurement • Explain how a counter works • Identify the basic parts of a counter

  4. Figure 13-1. Analog meter used for AC measurements.

  5. Figure 13-2. Digital meter used for AC measurements.

  6. AC Meters (cont’d.) Figure 13-3. Rectifiers are used to convert the AC signal to a DC level prior to applying it to the meter movement.

  7. AC Meters (cont’d.) Figure 13-4. Iron-vane meter movements do not require the conversion of AC to DC.

  8. AC Meters (cont’d.) Figure 13-5. A clamp-on meter operates on the principle that current flowing through a wire generates a magnetic field around the wire.

  9. Oscilloscopes • Oscilloscopes provide the following information: • Frequency of a signal • Duration of a signal • Phase relationship between signal waveforms • Shape of a signal’s waveform • Amplitude of a signal

  10. Figure 13-6. An oscilloscope is the most versatile piece of test equipment available to a technician.

  11. Figure 13-7. Block diagram of the basic parts of an oscilloscope.

  12. Oscilloscopes (cont’d.) Figure 13-8. Basic parts of a cathode-ray tube (CRT).

  13. Oscilloscopes (cont’d.) Figure 13-9. Oscilloscope faceplate.

  14. Oscilloscopes (cont’d.) Figure 13-10. Oscilloscopes vary in the number of front panel controls.

  15. Frequency Counters • Frequency counter • Measures frequency by measuring a known frequency against an input frequency

  16. Frequency Counters (cont’d.) Figure 13-12. Block diagram of an electronic counter.

  17. Bode Plotters • Bode plotter • Produces a graph of a circuit’s frequency response • Useful in analyzing filter circuits

  18. Summary • Types of meters for AC measurements: analog and digital • Types of meter movements used to make AC measurements: moving coil, iron-vane, clamp-on • An oscilloscope provides a visual display of what is occurring in the circuit

  19. Summary (cont’d.) • A counter measures frequency by comparing an unknown frequency to a known frequency • A Bode plotter produces a graph of a circuit frequency response

More Related