I've studied electricity in college... I've been a tech in a few fields (no pun intended). Your explanation of reg/rec is the BEST!!! Wow i know this stuff but to explain it to someone else is DIFFICULT!!
I'm an engineer and I agree with you. I think that he is one of the best at intuitive explanation. In other words applied engineering. Sometimes called cookbook application.
I know this was super simplified but by far the easiest explanation for entry level understanding! Imagine if everyone had even a basic understanding like this.
Actually...most inverters use Pulse Width Modulation. Meaning the "push" Mosfet is turned on in varying time cycles to approximate a rising positive voltage, creating a pseudo 60 cycle positive sine wave. Then the "pull" Mosfet does the same thing (rapidly) to give the negative component of the sine wave. These Mosfets are firing thousands of times a second and will give a very close approximation of a "pure" sine wave. Many installations use a choke to smooth out the high frequency component out of the 60 Hz signal.
@@ProfessorMAG how does a square wave a(e)ffect the conversion through the transformer? If it was no good wouldn't the transformer just not work? Doesn't most "sensitive" stuff use dc any way?
@@kevinwalker4623 Sensitive electronics typically use transistor based switching power supplies to go from AC to DC for the device they are powering. Switching power supplies AC side may be intolerant of square-wave or low-quality sine wave input. That's why a "pure sine wave" UPS is much preferred nowadays. In years past, "sensitive electronic equipment" used linear power supplies with huge transformers for their internal AC to DC conversion. These are much less sensitive to the quality of the incoming AC power. Look inside an older stereo receiver and you'll see it was 80% a very heavy, large linear transformer with a small circuit board for the actual main amplifier function. Note that even today boutique equipment may use linear transformers instead of switching power supplies for better line noise isolation in spite of the huge weight and cost penalty.
This is a very well done demonstration on this complex conversion between A/C - D/C and vice versa. You have the technical expertise and vocal presenting skills to teach. Your YT channel is my top source for electrical how to information. I tinker in basic home electrical repairs and your videos have guided me along. Thank you !
I don't think the current would go through the oscillator. When the oscillator activates a MOSFET, it lets power flow through it, vertically in your diagram. The lines from the MOSFET to the oscillator are control lines, not lines for the power to flow to the load.
@@casmitherz Just like "Current takes the path of least resistance"? Which is 'general knowledge' but is patently (and dangerously) wrong. He drew the circuit properly, and if he's presenting the subject he should at least get the basics right. I have a solid respect for Dustin an 90% of the time he's spot on but this time he's wrong.
Excellent tutorial👍 I got into Analog/Digital Electronics, Industrial Electrical and Residential Electrical at a very young age. I do IT Networking now, but everything else as a hobby and necessity. I love it.
I believe you showed the inverter load current incorrectly. The load current does not pass through the resistors installed in the gates of a FET. The switch (FET) only passes the load current from drain to source.
Another good example of where both processes nare going on concurrently is in data centers, where the UPSes are continuously converting AC to DC to maintain battery charge and provide enough DC current for the next step - convert DV back to AC. It both conditions the power and also continuous power to the compute load if utility power is lost without the need for an internal transfer switch.
About 20 years ago we still had a rotary converter that ran a 20 HP DC motor off batteries to provide 120/208 power to critical equipment. Finally replaced it with a modern UPS with a 6' cabinet of batteries
I havent watched in a while but i really wanted to learn more about the conversion process between AC and DC and vice versa. I am impressed. Your video (as always) is very helpful and explains in simple language so even beginners can understand. I studied basic electronics in high school and worked as airborne RADAR tech in the Air Force so have a pretty good background but you still filled in some gaps. However, is it possible you followed the wrong return path through the MOSFets? When i was in tech school we didn't spend much time with MOSFets so my knowledge is limited. But, i think you drew the current back through the MOSFets actually back through the gate connection and not the drain. When you cross through the enabled MISFet, your path should go to the right then down to the return path back to the battery. I don't think the reverse path from either of the MOSFets goes through the pulse oscillator. If i am wrong, please accept my sincerest apologies; and maybe point me to a reference where i could learn more. Again, love the channel! Keep up the great work.
Hey your the only guy I go to for electrical knowledge the trade schools in my area teach you to cut your ground rod short to the point where the inspectors don't dig anymore regardless of local code lengths.
Or if you really want DC as smooth as possible from AC, you charge a battery bank and the system runs off of the DC batteries. This is how the landline telephone network architecture was structured.
I get the function of the transformer in an inverter but it also seems kind of wastefull at some point. Seems to me if you want 120V AC you could just take 120V of batteries a couple of mosfets and then just flip the polarities on and off and flip them then you have AC. The only flaw I guess I see would be voltage drop of the batteries it may start at like 120 then drop to 110. A lot of UPS I see run at most 48V but these things take soo much amperage on the low voltage to make even 1/4 of the same at AC. I work in I.T one of my favorite things to part out is old UPS units, a couple times I made them into car inverters. There are also many kinds of UPS based on how they failover, some are pure sinewave others are modified sinewave, etc. Pure sinewave usually have a big heavy transformer, some mainly smaller models use a switching mode power supply setup with a high frequency transformer. Google at one time actually ran all their servers on a main DC input then the devices just had regulators to drop it down if needed. For computer stuff UPS really seem stupid to me because basically your making AC>DC>AC>DC. More common in telecom but have seen in older network gear they had 48V DC input options.
Not all UPS units have batteries below line voltage. Also IT, I was working on an APC double-conversion/online UPS few years back that the battery banks were 192volts DC.
Dude turn that stupid background music off. You're trying to explain important stuff and it's very distracting. Got through 2 min and don't wanna watch anymore cuz it's annoying.
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
I've studied electricity in college... I've been a tech in a few fields (no pun intended). Your explanation of reg/rec is the BEST!!! Wow i know this stuff but to explain it to someone else is DIFFICULT!!
Agreed. In our line of work the visual is the best way to explain and when it’s done like this it makes understanding much easier
I'm an engineer and I agree with you. I think that he is one of the best at intuitive explanation. In other words applied engineering. Sometimes called cookbook application.
I know this was super simplified but by far the easiest explanation for entry level understanding! Imagine if everyone had even a basic understanding like this.
Actually...most inverters use Pulse Width Modulation. Meaning the "push" Mosfet is turned on in varying time cycles to approximate a rising positive voltage, creating a pseudo 60 cycle positive sine wave. Then the "pull" Mosfet does the same thing (rapidly) to give the negative component of the sine wave. These Mosfets are firing thousands of times a second and will give a very close approximation of a "pure" sine wave. Many installations use a choke to smooth out the high frequency component out of the 60 Hz signal.
What you describe (in the video) is a square wave generator. very rough on sensitive a/c driven components.
@@ProfessorMAG how does a square wave a(e)ffect the conversion through the transformer? If it was no good wouldn't the transformer just not work? Doesn't most "sensitive" stuff use dc any way?
@@kevinwalker4623 Sensitive electronics typically use transistor based switching power supplies to go from AC to DC for the device they are powering. Switching power supplies AC side may be intolerant of square-wave or low-quality sine wave input. That's why a "pure sine wave" UPS is much preferred nowadays.
In years past, "sensitive electronic equipment" used linear power supplies with huge transformers for their internal AC to DC conversion. These are much less sensitive to the quality of the incoming AC power.
Look inside an older stereo receiver and you'll see it was 80% a very heavy, large linear transformer with a small circuit board for the actual main amplifier function.
Note that even today boutique equipment may use linear transformers instead of switching power supplies for better line noise isolation in spite of the huge weight and cost penalty.
Your passion for this field is very contagious. Thank you for making these videos
This is a very well done demonstration on this complex conversion between A/C - D/C and vice versa. You have the technical expertise and vocal presenting skills to teach. Your YT channel is my top source for electrical how to information. I tinker in basic home electrical repairs and your videos have guided me along. Thank you !
Thanks!
Thanks for your video Sparky. Like the Schindler unit.
appreciate the detailing of how you set up the drawings. helps a lot and definitely noticed it 👍
I don't think the current would go through the oscillator. When the oscillator activates a MOSFET, it lets power flow through it, vertically in your diagram. The lines from the MOSFET to the oscillator are control lines, not lines for the power to flow to the load.
This is for general knowledge... Not experts. ^_^
@@casmitherz Just like "Current takes the path of least resistance"? Which is 'general knowledge' but is patently (and dangerously) wrong. He drew the circuit properly, and if he's presenting the subject he should at least get the basics right. I have a solid respect for Dustin an 90% of the time he's spot on but this time he's wrong.
Thank you Dustin and Merry Christmas to you from a sparky too.🕊🕊🕊🕊👍
Easy to understand, thanks!!
EXACTLY! :D
Excellent tutorial👍 I got into Analog/Digital Electronics, Industrial Electrical and Residential Electrical at a very young age. I do IT Networking now, but everything else as a hobby and necessity. I love it.
I believe you showed the inverter load current incorrectly. The load current does not pass through the resistors installed in the gates of a FET. The switch (FET) only passes the load current from drain to source.
Wish I had this info when I was starting out saved me a lot of time standing on my feet...
Nice explanation. How about showcasing the method car radios used in the 1950's? Multivibrator for oscillation, step-up x-fmr, then vacuum tubes?
Another good example of where both processes nare going on concurrently is in data centers, where the UPSes are continuously converting AC to DC to maintain battery charge and provide enough DC current for the next step - convert DV back to AC. It both conditions the power and also continuous power to the compute load if utility power is lost without the need for an internal transfer switch.
Do you have a video on whole house surge protector
About 20 years ago we still had a rotary converter that ran a 20 HP DC motor off batteries to provide 120/208 power to critical equipment. Finally replaced it with a modern UPS with a 6' cabinet of batteries
I havent watched in a while but i really wanted to learn more about the conversion process between AC and DC and vice versa.
I am impressed. Your video (as always) is very helpful and explains in simple language so even beginners can understand. I studied basic electronics in high school and worked as airborne RADAR tech in the Air Force so have a pretty good background but you still filled in some gaps. However, is it possible you followed the wrong return path through the MOSFets? When i was in tech school we didn't spend much time with MOSFets so my knowledge is limited. But, i think you drew the current back through the MOSFets actually back through the gate connection and not the drain. When you cross through the enabled MISFet, your path should go to the right then down to the return path back to the battery. I don't think the reverse path from either of the MOSFets goes through the pulse oscillator. If i am wrong, please accept my sincerest apologies; and maybe point me to a reference where i could learn more.
Again, love the channel! Keep up the great work.
Hey your the only guy I go to for electrical knowledge the trade schools in my area teach you to cut your ground rod short to the point where the inspectors don't dig anymore regardless of local code lengths.
Can't see it from my house
Great video. 12-14-24 SA
Thanks 🎉
How about a video of valves, black, trial and support circuitry
Or if you really want DC as smooth as possible from AC, you charge a battery bank and the system runs off of the DC batteries. This is how the landline telephone network architecture was structured.
Very thorough explanation and very helpful and understandable.
Can you connect a welder to a phone jack or land line?
Oh, a Flintstone Bridge!
Well, the answer, Dustin, in very few words, is very inefficiently! Like all “transformers”, they throw off just a bit of heat!
I m from arizona and trying to get certified do u do az
Fo a video on old school mercury arc rectifiers
I get the function of the transformer in an inverter but it also seems kind of wastefull at some point. Seems to me if you want 120V AC you could just take 120V of batteries a couple of mosfets and then just flip the polarities on and off and flip them then you have AC. The only flaw I guess I see would be voltage drop of the batteries it may start at like 120 then drop to 110. A lot of UPS I see run at most 48V but these things take soo much amperage on the low voltage to make even 1/4 of the same at AC. I work in I.T one of my favorite things to part out is old UPS units, a couple times I made them into car inverters.
There are also many kinds of UPS based on how they failover, some are pure sinewave others are modified sinewave, etc. Pure sinewave usually have a big heavy transformer, some mainly smaller models use a switching mode power supply setup with a high frequency transformer. Google at one time actually ran all their servers on a main DC input then the devices just had regulators to drop it down if needed. For computer stuff UPS really seem stupid to me because basically your making AC>DC>AC>DC. More common in telecom but have seen in older network gear they had 48V DC input options.
Not all UPS units have batteries below line voltage. Also IT, I was working on an APC double-conversion/online UPS few years back that the battery banks were 192volts DC.
Protons don't flow--electrons do. Conventional current flow vs. electron flow. Do you know the difference?
Very long ago, in a galaxy far far away, current ran from the positive/red dc wire. The only thing positively moving are holes.
Dude turn that stupid background music off. You're trying to explain important stuff and it's very distracting. Got through 2 min and don't wanna watch anymore cuz it's annoying.
Realty pros use cordless , so you use this to charge your tool batteries, invest in lithium everything is about batteries..