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Hi Darren,
Those are the same courses, we just added the word “Advanced” to help folks understand that they are supposed to be taken after completing the “Core” course. Also, it allowed us to Bundle them together and refer to them as the “Advanced” courses.
But, I now realize that when you go to the “My Courses” listing, they don’t have the word “Advanced” in front of them.
Let me get your opinion – take a look at your “My Courses” page.
If we add the word “Advanced” in front of the Refrigerator, Washer & Dryer, and Oven & Range courses, would that make the course titles too long or harder to find what you’re looking for at a glance? Or would it be better to do so that others don’t have the same question you did?
Thanks!
December 3, 2020 at 8:40 pm in reply to: Video on “importance of understanding of reference “ ? #21019At around 1:02-1:03 he is talking about the reference you use to take a voltage measurement, which is what I was talking about above.
Voltage is always a difference between two points. You put one probe on the point of interest in the circuit, and the other probe on a reference point.
You can watch the second video in Module 3, unit 8, for a quick review of making voltage measurements.
The webinar he talked about is at Appliantology. Have you activated your student membership there? You’ll need to be logged into it to view this:
https://appliantology.org/topic/72236-samsung-dryer-troubleshooting-and-electric-circuits-review/
December 3, 2020 at 5:46 pm in reply to: Video on “importance of understanding of reference “ ? #21016Please tell me which video this is in – which unit in the Troubleshooting module. And an example time stamp where he says that. Thanks!
December 3, 2020 at 5:32 pm in reply to: Video on “importance of understanding of reference “ ? #21014Hi!
I’m assuming you are talking about the importance of understanding what your reference point is when doing a voltage measurement. Voltage is always a comparison between two points. That’s why you use two probes. You are measuring at one point “with respect to” another. A common reference point is a known-good neutral. A common voltage measurement would be looking for 120vac at a component with respect to neutral.
Does that make sense? (And, is that what your question was referring to?)
Yep!
Maybe this will help:
Good!
Yep!
Yep!
If you do the 1/[(1/4.4) + (1/6.25)] formula you get Req of the windings of about 2.5. So, what would you say is approximately the equivalent resistance of the compressor and the condenser motor?This is from our Core course:
Electrically Equivalent Points (EEPs)
Another way to avoid unnecessary tear-down is by locating EEPs, which are points that look exactly the same to electrons and can be used to make electrical measurements from easy-to-access locations, rather than at the suspect component itself.
The two characteristics of EEPs are:
1) They have electrical continuity with each other. In other words, if you measure the resistance between two points that are electrically equivalent, you will measure zero ohms. It would be like measuring the resistance in a section of wire.
2) There is zero voltage difference between points that are electrically equivalent. If you were to measure voltage across two EEPs, you would read zero, even if both points were at 120vac.
Understanding, recognizing, knowing how to use EEPs can help you avoid needlessly tearing down an appliance just so you can check a component. EEPs are found by using the schematic diagram, and occasionally the wiring diagram, to determine where the EEPs physically are in the machine.
November 30, 2020 at 1:03 pm in reply to: Can I move on next module while preparing for midterm ? #20966Hello!
Each course is designed so that you have to take each quiz/exam in order to move to the next unit. There is a deliberate design to the courses, for the training to be most effective.You can always go back to review, but you should not move forward until you’ve mastered each lesson/module.
Hi Darren,
Glad you enjoyed the Refrigerator course!
The Oven and Range Final Exam will cover material from Module 4 (microwave ovens) and the technical presentations from the Case Studies. It will not cover material from Modules 2 and 3, since we have module exams for those.
There isn’t a strict course order that we recommend, but so far you are doing what most people usually do – Core, Refrigerator, Oven & Range, Washer & Dryer, Adv. Troubleshooting.
Enjoy!
You’re on the right track. In order to have current flow, you need to have different voltages on either side of the load. For example, Line and N, or L1 and L2. Having L1 on both sides of the load means no current flow. So – any voltage drop?
Hi Andrew,
If you have L1 on each side of the motor, will current be flowing through it? Remember, you have to have current going through a load to have voltage drop.
I reset you.
I encourage you to ask for clarification whenever you need it. We wrote questions in such a way as to encourage people to think about the concepts that we are teaching and pay attention to details (very important for anyone who is a “technician”). But every student has unique needs – different language skills, different educational background, etc. So, that’s one reason we have these Forums, so that you can ask for help if something doesn’t “click” with you.
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