Comments by "Mike Chiodetti" (@mikechiodetti4482) on "The Engineering Mindset" channel.

  1. Back in the late 1970's, I put in a whole semester learning about resistors, and learned about 90 percent of that semester in this video! Plus the resistors back then were the carbon variety, unless you worked with industrial (1 percent) resistors. They were blue colored with black value numbers on them.
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  2. Thank you for this video. I worked in the Automotive field for more than 30 years and part of that was learning about and repairing mobile A/C systems including my own vehicles. While auto compressors were mostly belt driven, obviously being variable engine speed, piston pumps with "Swash Plates" could give variable output. Some vehicles had electronically controlled output, many had clutch engagement on the drive side. Since Hybrids came out, their compressors could use the High Voltage Battery Power changed to a 3 Phase A/C Motorized Compressor. I'm reading more lately how low pressure gas engine fuel pumps are 3 phase power now. That pump has it's own module that changes the 12 Volt battery power to variable 3 phase power controlled by the Powertrain Control Module (PCM) which runs the engine. The Fuel Pump Control Module changes the fuel pump's output depending on the signal from the PCM and it's demands. That's on a CAN network. Talk about complexity! Thank you for this video.
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  3. Very good description. It never ceases to amaze me how magnetism can cause motion.....especially when cranking an engine. I've rebuilt many GM starter motors from the 1960's and 1970's during that time. My Dad taught me. Also rebuilt Ford, Chrysler, Nissan and large truck cranking motors. Never worked on an air starter. Interesting animal that one.
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  4. I remember learning this in some electronics courses. The Toyota Prius hybrid had been using LARGE IGBT's for it's 3 phase motor. Napa Auto Parts training side had a fantastic course explaining how it all worked and more that was built into the system. Of course this video answers questions much better than the books I've read, and I thank you for this. If anyone is learning about DC to DC and DC to AC inverters and converters. That Napa course will give a lot of info, but this video is the start! I'm assuming people that see this video understand the basic theory that "When magnetic lines of force cut across a conductor, a voltage is induced in the conductor and current (electrons) can flow." Without this "working theory," we'd never have the great electrical and electronics we have now!
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  5. The only change to this video is the pistons and their connecting rods are mounted to the CRANKSHAFT not the camshaft. The camshaft is turned by the CRANKSHAFT and the camshaft is used to move the valvetrain which opens the intake and exhaust valves.
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  6. I've only seen the chemical action and electron movement in one book during a training session many years ago put on by Delco Remy. This short video makes it so much easier to understand! Thankyou for this video.
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  7. It's been a long time since I did the circuit building. It's fun to do this and you can build some interesting projects. The math for the circuit components is what I forgot from long ago. Thank you for this.
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  8. Great way to test it with a light load. It can also be tested under load in the device it's installed if it's accessible, but I like your way for a quick test.
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  9. You make easy to understand and moving animation enhances your explanation.
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  10. You provide a lot of information in a short time. It helps to have some electronics background or watch the video several times. Wish I had your videos when I first learned electronics. Seeing "How" the components function is definitely a BIG help! Thankyou for this video.
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  11. Simple and work great. When they get old, intermittent, partial, no operation and leaks happen. Automotive systems and residential sprinkler systems are classic examples.
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  12. Without the battery, the starter won't turn the engine. If the vehicle has a manual transmission, you can push start the vehicle and get the engine to run. Takes some effort, but it does work.
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  13. You do basics GREAT!
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  14. Very good explanation. Limited slip or positraction diffs are good but can get you into trouble. Ask me how I know! Air or electrical locking differentials are much better and give you the option to run an open diff or a "locked" diff. There's also another way which is using the ABS to intermittently apply and release the brake at the slipping wheel and allow the diff to apply more power to the non slipping wheel. You still have an open diff but when needed the ABS system gives you that "limited slip" feature. I have the ARB Air Locker in my Nissan Frontier 4X4's rear diff. Works great!
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  15. This video just explained the basics of magetism in a few minutes that took school instructors "days" without examples to explain! Thankyou!
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  16. Most of that is a "Turns Ratio," still it's better to have these formulas especially when figuring transformer losses in percentages which is real life operation. I'm not an engineer, but when I installed inverters in vehicles there was some math involved to figure total wattage consumption, which included about 10% over total watts which then gave me what I needed to know for the Battery Power input, cable sizes and what type of charging system would be needed for the vehicle and if necessary vehicle parked, engine off external charging. Thankyou for this video.
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  17. Thank you for the explanation and difference between the "Y" and the "DELTA" connections. When would the "Y" connection and the "DELTA" connection be used?
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  18. The magnetic bearings and the 2 stage compressor had my attention first, but then the shutdown system that turns the motor into a short term generator is a fantasic way to protect the whole machine. Thank you for this video!
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  19. I learned how pumps are measured for their pressured output. Didn't know that. Thank you. What about P.T.O. high pressure hydraulic pumps used to lift a boom and a bucket which are installed on a bucket truck? How are they tested?
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  20. If you had a 9 volt battery, what kind of circuit could you build to have +5.00 Volts output?
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  21. There were some vehicles that had a Large belt being turned by a combination starter and alternator. These were "mild" hybrids. Some early Honda hybrids had both the hybrid drive and a separate engine starter.
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  22.  @EngineeringMindset  good luck with the studio building and operation.
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  23. Very good basics video.
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  24. Thank you for this video.
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  25. Easily explained. Thank you.
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  26. Thanks!
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  27. A Digital Multi Meter will tell you the voltage, but it depends on the load itself. Light load-long battery life. Heavy load - short battery life.
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  28. This is without a doubt the best and easiest way to understand how an alternator (or generator in GM speak) works! I wish I had this when I went to automotive training many years ago instead of how and what was taught back then!
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  29. I've tested and replaced pressure switches in automotive systems. Very interesting video.
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  30. Many already know WHAT they are used for, very clear and precise explanation for this video. Please explain HOW it works to break the circuit and HOW each component works inside the breaker itself. Thank you.
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  31. It's reposting some previous videos.
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  32. Alex Your thinking of the Oldsmobile Toronado and/or the Cadillac Eldorado. They had the "North-South" engine like a rear wheel drive car AND a Front Wheel Drive ( FWD) drive train. They had a very UNIQUE "Chain Drive" in front of the automatic transmission. The chain was VERY strong, capable of handling over 400 lb ft (foot pounds) of torque. Hope This Helps.
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  33. Just like the Prius and other EV's.
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  34. Thank you for this very understanding information.
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  35. Rise and Fall time. I remember that from about 40 years ago.
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  36. Thank you for this explanation.
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  37. Thankyou for this knowledge. I've thought about this in the past. You've brought it to light.
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  38. Hybrid vehicles use a High Voltage battery then use the inverter to make 3 phase AC power to the drive motor. This video was a great way to see how the three phase AC becomes a variable frequency drive or VFD. Thank you.
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  39. Definitely a great explanation into how the valve works. In the automotive there are several control valves, one being the purge valve which is part of the fuel tank evaporation system. That system is one of the emissions control systems.
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  40. Very good explanation and with movement in the video, easy to understand. Thank you.
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  41. Very interesting how these systems function. I do like the cover on top to force the hot air up and over to the CRAC unit.
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  42. Very easy to understand. Thank you.
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  43. Explained better than multi still shots!
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  44. This explanation and video of electrons and holes is MUCH BETTER than the still shots and chalk board drawings while using your imagination which was the way I learned it! BIG THANK YOU ! ! !
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  45. Wow! More fantastic information!
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  46. I've been meaning to put some cash in for you. Thank you for all your many many videos you bring to us!
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  47. Good explanation of torque and how it works.
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  48.  @SACalkins1  Thank you.
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  49. Now I have the engineering design and proven concept of HOW IT WORKS!
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  50. I saw this already about 2 weeks ago. It's still worth watching.
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