Small Engine Repair: How to Measure and Use Voltage Drops to Diagnose Electical Circuit Problems
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Uploaded by smallengineshop on Sep 5, 2011
**Always follow the instructions in your repair manual when doing repair or maintenance work on Outdoor Power Equipment. Manuals can be found at the manufacturers website.**
When current flows through a wire and comes under the influence of resistance, there will be a voltage drop across the resistance. All connectors and wires in a circuit have resistance. The resistance found in good connectors and wires is very small and is usually insignificant when working with electrical circuits found in small engine repair. However, when a connection becomes lose, damaged or corroded, or when a wire becomes corroded or damaged, the connection or wire will produce a resistance that is higher than normal and will develop a voltage drop that will be high enough to cause problems in the circuit. The development of this high resistance makes it possible to use voltage drops to diagnose problems in a circuit.
In this video I try to explain how to use voltage drops to diagnose problems found in electrical circuits.
Thanks for Watching!
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Uploader Comments (smallengineshop)
All Comments (13)
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@Gizmopflege To be honest with you, I can't remember what I did.... : )
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Great video. This information and methods can also be used when troubleshooting car voltage drop. Btw I didn't notice you mentioning that you had disabled the ignition of the tractor in order to perform the test. Probably you disconnected the spark plug cable first, otherwise the engine would have started.
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@wranglersdad1953 Thank you for your support.
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@tionebnitrof Thanks, and thank you for watching.
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Great job. I know electrical & you did a great job. Please keep your videos coming on small engine repairs & trouble shooting.
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WOW .. tyvm for the video, it's really helpfull...
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one of the best vids lve seen on voltage drop....well done!!!!
niper99 1 month ago
@niper99 Thanks!
smallengineshop 1 month ago
Excellent information.
MrRmh3481 1 month ago
@MrRmh3481 Thank You!
smallengineshop 1 month ago
good job on this video it was helpful on circuits diagnoses keep up the good work
MrRich3861 2 months ago in playlist More videos from smallengineshop
@MrRich3861 Thanks You
smallengineshop 2 months ago