Digital Multimeter for reading resistance Forging new generations

Digital Multimeter for reading resistance Forging new generations of engineers

What is a Digital Multimeter? a. A digital multimeter measures AC and/or DC voltage, resistance, and current in an electric circuit. It is highly accurate and displays an LCD number readout.

Test Leads Test leads are used to connect the multimeter to the circuit to be tested.

Test Lead Connections - Voltage a. Plug the RED test lead into the jack labeled V/ and the BLACK test lead into the jack labeled COM (common).

Ohmmeter The ohmmeter is used to measure the resistance of a component. POWER CANNOT be applied to the component being tested. The ohmmeter actually applies a small voltage and uses Ohm’s law to calculate the resistance from the measured current.

Multimeter Right now the leads are not touching. What does the meter read? What does that mean? This section measures resistance in ohms Choose 2 M 200 k 2 k 200 ohms

How to choose your setting a. Set the meter to the next highest value beyond what you are testing. b. IE: you think you have a 330 ohm resistor c. What value do you set the meter to? a. 2 M b. 200 K c. 20 k d. 2 k e. 200

A setting of 2 M gives a reading of. 222 MΩ = 222 K Ω which is within the tolerance for a 220 Ω resistor Choose 2 M 200 k 2 k 200 ohms a. To measure a 220 K Ohm resistor, what setting do you use? b. 200 K? c. What does the meter on the right read at the 200 K setting?