As it has already been stated, great to have you back! Thanks to you my automotive electronics training was easy. Not that all of the problems are easy, but your instruction has made the troubleshooting process itself some much clearer. Great PWM tutorial, Thank you. I also a few years ago purchased your Loadpro and book, one of the top 5 best buys that I have ever made. Thanks again. I think jealously is why you catch so much hell:)
Well, what can I say. Your method of training is so easy to understand (no bullshit). I have been trying to understand why your training method is so effective and that you have so many good engineers out in the field. You can memorise some things without understanding them but if you understand something, you don't have to memorise it. Thank you very very much for your time and method of training ( old school ) unfortunately today company's managers supervisor's put pressure on engineers by asking the question what's wrong so as to help them with there decision to replace parts for financial gain most of the time. (To fix something is temporary, to repair something is permanent) More money out of fixing things than Repairing them.
Hey Dan I'm working for the Danish State Railways as an electrician and I just want to say thank you. because you do these Video and your books. they have helped me a lot. the good thing about your video is that you have taken a position on things before talking about it
Love the editing. Funny. Soo glad your back. I was thinking of sending you a question. Ran across an old system that has 24dc starter 12dc rest of system. Used a Transformer rectifier alternator. I was very confused on how it all hooked up and charged. Any thoughts?
Dan, how I found your channel I do not know... But fascinating indeed. Question: as more volts equals more amps, but how is it possible for a device that runs on 120v with an output of 1000W that draws 12A...but the same identical device has ability to run on 240v, and still has same 1000W output, but states it now draws 6A. The way I understand your video, when this device goes from 120v to 240v, the amperage of 12A (@120v) would go to 24A (@240v). What am I not understanding correctly?
Watts = Amps x Volts. In Ohm's Law, amperage is the RESULT. In Watt's Law, amperage is the REQUIREMENT. Watts = HP. To get the same HP out of a system, you need less energy (Volts) if the flow (Amps) is more.
Think about it like water so you may understand whats going on. Say your load, which is watts, is a bucket you need to fill at at certain rate. Lets then say a 1 inch water pipe with a pressure of 10 lbs is what this load, lets call it 1000 watts, needs to operate. Also know that this load is drawing this much water. Without this load connected no water would flow. Now lets put (2) 1 inch pipes to this bucket. Obviously you would have too much water unless you reduced the pressure. Like cut in in half, since you doubled the water pipe. In this scenario the water pipes are the same as volts. The pressure is amperage. So watts are equal to volts times amps. This is ohms law. When volts go up amps come down because watts dont change. Your 1000 watt load will be 1000 watts weather it is supplied by 120 or 240 volts. But the amperage will be half of its 120 volt when 240 volts are supplied. If you get this you should understand that this same load could be supplied with 5 volts power in which case it would use 200 amps of current. This is in theory, would actually work if load was like a heater. But motors need their nameplate voltages or they will fail miserably. Think of it also as 120 volts times 12 amps equals 1440 watts. So then 240 volts times 6 amps equals 1440 watts.. I am totally impressed with Dan Sullivan. Ive been an ac only electrician all my life. This automotive dc current is new to me. Dans truly cuts through a lot of crap and quickly easily and correctly diagnoses auto troubles. These days, in my line of work , up to 600 volts ac, it is considered too dangerous to do tests on live stuff so we are supposed to use energized testing methods. Ohmeters and taking wiring apart and put it back together. Before all the safety rules, it was much faster to troubleshoot engized circuits. Dan can suggest these ways because safety guidelines allow it. I say look only at his teachings and really ignore all the rest. From an old timer l say trust him. There is no end to folks that use primitive techniques. And love to blab about it.
+bubba cook Well - since you asked, I'm planning to set up a KickStarter page for the next book I want to write. Can't give too many details because I want it be a surprise (!) - but I figure if I could get all of the subscribers to give me $5 I'd be able to pay my back taxes, hire the cartooning, and take time off from teaching to get it done. I feel greedy asking because that would be a LOT of money - but the ultimate goal is to build a school anyway. Anything left over would go to that... Thanks for the thought.
+Daniel Sullivan Five bucks is cheap! You are helping me broaden my skills from self-taught welder to being someone who will have knowledge that helps in many fields. Keep up the good work.
+Daniel Sullivan Hey Dan, Glad to see you're back.When you do the Kickstarter thing, send out an email to your email list, I will contribute for sure. Make sure you have an area for my seriously devalued Canadian dollars! LOL
@@bivideo7 Hi Dan I ordered your book also but I don't know how you got the .982 Ohms in your equation on page 57. I have tried all kinds of math to get that number but I can't get it. Could you tell me how you arrive at .982 Ohms? I can get the 27.21 amps if I divide 26.75V by each solenoid's resistance and add them together to give me 27.21 Amps , I just can't get the .982 ohms part.
can u elaborate more on the part in book titled: "ohmn law saved my truck". im wondering how your total resistance came out to 0.982 from 1.4 ohms and 3.3 ohms.
+Isshman Garcia If you have the book, look at the section on parallel resistor combination, then get back to me. And/or watch this - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-vpWLhVDfkc8.html
+Vilo Conshmillo Generally - the resistance of a hydraulic SOLENOID (NOT a battery RELAY) is roughly equivalent in OHMS to the VOLTAGE of the system. I've found through experience that a 12V solenoid is always close to 12Ω, and the same is true of a 24V solenoid being close to 24Ω. This is just a good number to keep handy if you don't have any other info to go on.
I'm in hvac school at this time. And was thinking furthering my education to better understand circuits and testing as you are doing. I do work on my vehicles and elec. around the house, but would like a better understanding. Would your classes be a positive thing for me, and if so if you have a website I can keep checking it and if I could fit it into my schedule. But at present i am full time, Thanks.
Mechanically, volts and ohms MAKE amps - I don't say "create". You're essentially correct, from a test question point of view, but there are a many different ways to think about most concepts. My point is that volts ÷ amps don't MAKE ohms. Teaching this concept with math is not effective if the real mechanical relationship is not understood. You're being a little narrow-minded if you think your explanation is correct and mine isn't. If you're smart enough to appreciate your perspective but you feel the need to criticize my explanation, I question your motive for making the comment.
you are a smart guy but you a false statment on your thumbnail that volts and ohms makes amps...this is not true so why would you say it....it would only confuse a new student . And by the way...why do you feel the need to degrade any body who adds to the conversation the you may disagree with. Its sad that you use the terms idiot and stupid so much in your videos when speaking of people who do things or think things diffrent then you.
And one more thing...Mechanical Volts and Ohms do not make Amps...Calculationaly it does but not mechanical. In a supercooled superconducter circuit...the circuit has virtually no resistance but a voltage source push the electrons through the circuit. VOLTAGE AND A CLOSED CIRCUIT MAKES AMPS.
AND THE CIRCUIT HAS RESISTANCE BECAUSE IF IT DIDN'T AMPS WOULD BE INFINITE AND EVERYTHING WOULD MELT. Without resistance the CALCULATION won't work. You included TWO variables - there are three. WHAAAAAT?
Wrong again...in a near zero resistance circuit...melt down would not occur if the voltage source were not pushing the current beyond the conductors amperage raring. I know this is beyond auto tech level of elecrical therory...sorry to go above your understanding.
For a man that understands the importance of language, I don't understand why you say, volts "plus" ohms makes amps. You should always say volts "divided" by ohms makes amps. It might not seem important, but it is. Thanks Dan, glad you're back.
+John C I'm pretty sure I've never used the term "plus" - I say volts AND ohms MAKE amps, which is the mechanical way of thinking about it. My position remains that the math is secondary to understanding what does what. If I said "plus" tell me where so I can review it.
John C Okay - but I didn't say "equals", so it isn't math. If you've watched any of my other videos - specifically those on Ohm's Law - you'd understand. I don't necessarily disagree - but I don't really agree either.
at 3:21 "...because digits means 1 and 0" ....lol. No, digits does not mean that. It means any of the numerals from 0 to 9, especially when forming part of a number. Stop making these videos because your "name dropping" of terms is very bad and will end up confusing people.
Nice suit. Did it come with an "I know everything and will insult people to make my point because that's what assholes do Club?" membership card? In BINARY - digits means "1" and "0". In anatomy it means fingers. Which digit is the 00000011rd digit that am I showing you the proximal, medial and distal phalange of? Seriously pal, take the superiority complex with you when you go back and beat the shit out the guy who cut your hair...
I'm not the one with the complex. You are. I was simply correcting a wrong statement. Sorry, you can't take it when someone points out that you are wrong. Oh, and I don't need a lesson in any thing electrical. I can hold my own. Thanks!
