Learning outcomes part 9- using multimeters

• purpose of a multimeter and understand how to set the meter to the correct range before connecting to the circuit.

• the advantages and disadvantages of analogue and digital displays, and be able to read analogue and digital values.

• the importance of polarity when connecting a meter in a circuit.

• a voltmeter is always connected in parallel with a circuit component, and that an ammeter is always connected in series with a component.

• The current in all parts of a series circuit has the same value and that the potential differences across components in parallel are the same.

• use of voltmeters and ammeters to determine the power applied to a circuit. Recall that the RF output power (of an amplifier) is less that the DC input power due to inefficiency.



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