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SEMICONDUCTORS

SEMICONDUCTORS. How to use a digital multi-meter(DMM). SEMICONDUCTORS. You will need to be familiar with the basics of your digital multi-meter to successfully test the different components you will be using in your experiments.

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SEMICONDUCTORS

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  1. SEMICONDUCTORS How to use a digital multi-meter(DMM)

  2. SEMICONDUCTORS • You will need to be familiar with the basics of your digital multi-meter to successfully test the different components you will be using in your experiments. • The most basic test is a continuity test using the ohms scale typically set to RX-1 or Ω.

  3. SEMICONDUCTORS • Some meters have a chime indicator for continuity tests. • Here we are testing our meter by touching the leads together, we should have a very low resistance (only the resistance of the test leads is indicated.

  4. SEMICONDUCTORS • If we get an “OL” reading something is wrong, OL stands for “open loop” or infinite resistance, it may be necessary to check the fuse if you read “OL”.

  5. SEMICONDUCTORS • Fuse replacement for your meter (61-312/61-314)

  6. SEMICONDUCTORS • Notice the warning, DE-ENGERIZE CIRCUIT FIRST. NO SOUND INDICATES AN OPEN CIRCUIT

  7. SEMICONDUCTORS • Note: we have the same warning!

  8. SEMICONDUCTORS • We set the dial to “V” and then use the button to toggle to “DC”.

  9. SEMICONDUCTORS • When measuring “AC”, select the “V” setting and your meter automatically defaults to AC voltage.

  10. SEMICONDUCTORS • Note: same warning here, DE-ENERGIZE the circuit before testing. • Choose the chime/diode setting and use the button to toggle to the diode setting.

  11. SEMICONDUCTORS • DE-ENERGIZE

  12. SEMICONDUCTORS • The temperature gauge adapter utilizes both the common and voltage ports for measuring temperature.

  13. SEMICONDUCTORS • CURRENT IS MEASURED IN SERIES. • If you measure current in series it will blow the fuse in you meter.

  14. SEMICONDUCTORS • Measuring frequency

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