Measuring a fuse on board with an analog multimeter The common type and current rating of a fuse in a Monitor and Power Supply are slow blow 3.15A to 5 Ampere. Here is the part on how to test a fuse. Switch off the power of the equipment, remove the casing and you will see a fus...
Switch the leads on your ohmmeter so that the positive lead is connected to the anode and the negative lead is connected to the cathode of the SCR. Read the resistance value that is displayed on the ohmmeter. It should read a very high value of resistance. If it reads a very low value...
On the other hand, the high limit switch may be operating normally and shutting off the gas because the furnace is actually overheating. This is usually due to poor airflow caused by extremely dirty filters or a mechanical problem with the blower motor. Before assuming the limit switch is at...
Set your multimeter to Continuity - the symbol looks a bit like this: •))). Can you drive with a bad temperature sensor? It is possible to drive a vehicle with a faulty coolant temperature sensoras the management system defaults to a static reading. A vehicles coolant sensor is a criti...
Introduction of how to use a digital multimeter. Selecting measurement parameter, switching ranges, and connecting test leads.
You now can test the motor and other components using a multimeter. Service a clothes washer pump: Unplug the washer and turn off the water supply to the washer. Remove the housing as needed to access the pump (see above). Loosen the hose clamps and remove them from the pump inlet and...
Then connect the anode and gate terminals of the SCR to the positive lead of multimeter and cathode to the negative lead. The multimeter will show a low resistance indicating the switch ON of SCR. Now carefully remove the gate terminal from the anode and again the multimeter will show a low...
If you select a higher range, most part of the times you’ll be able to read the value of the voltage, but with less accuracy. What happens if you switch the red and the black probe? Nothing dangerous will happen. The reading on the multimeter has the same value, but it’s negative...
Switch the multimeter setting to the volts scale, 10 volts maximum. Insert a flying lead between the two wire connections. Flying leads have extensions that plug into the female side and the opposite male side, with some bare metal exposed, so you can probe both wire sides with the jack co...
encoders, and logic controllers. Because the results are digital, a digital multimeter has the potential to be much more accurate and precise when taking measurements. That extra precision has to do with the increased resolution afforded by the advanced digital components, error correction, and proc...