Oct 06

Testing Diodes with Multimeters

The multimeter combines multiple electrical diagnosis functions into one portable unit. Technicians can use this tool for a variety of applications, including measuring voltage drop, continuity checks, diode checks, capacity checks, and more. In the video above, Purkeys National Truck & Fleet Representative, Larry Rambeaux, demonstrates how to conduct a diode check using a multimeter....

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Sep 28

Using an In-line Ammeter to Find Parasitic Loads

Purkeys Electrical Tool Kit comes with a variety of useful tools to help technicians test and diagnose heavy-duty vehicle electrical systems. One of the most commonly used tools in the kit is the multimeter, a device that combines multiple electrical diagnosis functions into one portable unit. However, many technicians do not recognize the utility of...

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Sep 21

The Handy Clip-On Ammeter

Purkeys Electrical Tool Kit comes with a variety of useful tools to help technicians test and diagnose heavy-duty vehicle electrical systems. This week, we will be spotlighting one of the tools in this kit—the clip-on ammeter. Unlike the ammeter function of a standard multimeter, which we discussed previously here, the clip-on ammeter measures current through...

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Sep 14

Testing Resistance on 5-Pin Relays

The multimeter combines multiple electrical diagnosis functions into one portable unit. One of the more frequently used functions of the multimeter is the ohmmeter. The ohmmeter measures resistance in Ohms (Ω). In the above video, Purkeys National Truck & Fleet Representative, Larry Rambeaux, demonstrates how to test resistance on a 5-pin relay using an ohmmeter....

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Aug 31

How to Read an Ohmmeter

The multimeter combines multiple electrical diagnosis functions into one portable unit. Technicians use this tool to test a wide range of situations, including voltage drop, continuity checks, diode checks, and capacity checks. In the video above, Purkeys National Truck & Fleet Representative, Larry Rambeaux, shows how to properly use an ohmmeter. The ohmmeter is a...

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Aug 17

Testing the Circuit with a Voltmeter

Multimeters combine multiple electrical measurement functions into one portable unit. These instruments measure voltage, current, and resistance to detect or diagnose a host of electrical issues. To get the most from a multimeter, technicians have to understand what is being measured and what the measurement should be. One of the most commonly used functions of...

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Aug 11

PURKEYS’ MULTIMETER TOOL KIT

Heavy-duty vehicles are far from simple machines. When they are not working correctly, it can be a challenge to find the source of the issue. Technicians need proper training and tools to do this job. The Purkeys Electrical Tool Kit gives technicians everything they need to test and diagnose a variety of electrical issues on...

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Aug 11

PROPER MULTIMETER PRE-CHECKS

The multimeter is a great tool for any technician who needs to test and diagnose electrical systems. These handy devices combine multiple functions into one portable unit. Technicians can use this tool for a variety of applications, including voltage drop, continuity checks, diode checks, capacity checks, and more. Before technicians use a multimeter, there are...

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Apr 27

PURKEYS’ MULTIMETER TRAINING UNIT IS NO ONE-TRICK PONY

  Purkeys’ Multimeter Training Unit allows technicians to hone their skills with a multimeter in a controlled environment before practicing on a heavy-duty vehicle. It also keeps students on their toes with customizable settings that can train and test students for a variety of different electrical situations where they would have to use a multimeter....

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Feb 04

HOW TO USE A MULTIMETER: PARASITIC LOAD

Discharged batteries are a common issue for technicians to deal with. According to Purkeys Sales and Service Engineer Larry Rambeaux, discharged batteries could be one of two issues: a defective battery or a parasitic load. So, how to check for a parasitic load with a multimeter? Whenever starting, technicians need to make sure to disconnect...

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