1. Advanced Test Equipment, 8275A Mt Druitt College of TAFE Department of Electrical Engineering

2. © Mike Stacey 2 Oct-15 Topics Meter Readings Revision of current measurements using an analog meter  Draw a diagram of how to connect an ammeter in a circuit containing a 10V dc source and a 1kΩ resistor – label your meter leads +ve and –ve  What settings should your meter have prior to turning on the power? Please redo a couple of measurements from last week’s practical

3. © Mike Stacey 3 Oct-15 Current Measurements (ref p16 text)

4. © Mike Stacey 4 Oct-15 Meter connection [1] When measuring current, the meter is connected in series with the circuit

5. © Mike Stacey 5 Oct-15 Meter connection [2]

6. © Mike Stacey 6 Oct-15 The ammeter is connected in series with the circuit

7. © Mike Stacey 7 Oct-15 Check polarity is correct

8. © Mike Stacey 8 Oct-15 Selecting the correct range Begin with the range selector set to the maximum and then gradually wind it down until you have the greatest accuracy.

9. © Mike Stacey 9 Oct-15 Example connections

10. Meter Readings See page 3.10 workbooks Resistance measurements Find the indicated value of the meter for the following range settings: x1, x10, x100, x1k, x10k Current measurements Find the indicated value of the meter for the various current range settings