Using Power Transformers In Parallel or In Series
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- เผยแพร่เมื่อ 11 ก.ย. 2024
- Learn how to properly connect power transformers in series for increased voltage output, or in parallel for increased current output. Follow what is outlined in this video for best results, and to avoid problems. If you have any questions, please feel free to post them in the video comment section.
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Thank you for this demonstration. I'm trying to connect 2 HV xfrmrs and need it to be 100% correct the 1st time. The best aspect of this video is the voltage check w/ meter BEFORE completing secondary connections. That step is not included in any other YT video covering this subject.
finally someone speaks english
😂😂😂😂😂
I found the dae problem. I have an egs002 circuit and I want to see if I can build a 3000watts hybrid inverter by looping transformers
Thank you, just what I needed, in my case I am using one transformer with two secondary outputs, but the logic is the same.
Excellent this helped for my swimming pool light maximum output brightness 🔅 by increasing the current
Excellent, many thanks for the information.
You are welcome Jim!
Incredibly well explained. Subscribed and liked. I will be watching a lot more of your videos! Huge appreciation for your time in making these tutorials and giving a clear concise explanation to electronics. Thank you again.
Michael Moran You are very welcome!
Another well informed video, good job! )
Glad you liked it.
electronicsNmore I was considering joining 2 mots (700 watt each) via isco blocks but I`m not sure it would work for me since I`m using a pulse wave modulator and it`s only rated to 40 amps and I`m getting 30+ with one transformer. This is for an HHO project, a next move up from my youtube video 'h-cat water jacket (ii)'. I`m trying to combine HHO with a flame along with a h-cat for heating.
I had one of these small microwave transformers and even was able to use it for a little while, till I accidentally burned up the primary winding by connecting the input to the wrong pair of pins. When I proceeded with the repairs I found out that there was some kind of electronic component connected between two of the four input pins (which was covered with the coils of wire so you can't really see it till you unwind the primary coil) and to one end of the primary winding. And the really good thing that I noticed about these transformers is that their frames can be made wider by sanding off the protruding edges of the framework, allowing more of the laminated iron core sheets to be inserted into the frame, thus increasing the overall transformer's power capacity.
You needed to watch this video. :-)
Load Lamp ~ Very SImple, But Very Useful
electronicsNmore Thank you. That's a really smart way of checking the connections of inductive loads. I first saw this method in one of the videos on how to construct a transformer, but didn't really thought of it as something that might come in handy one day.
Great video and really helpful to understand linking two this way. I wondered, can I connect two toroidal transformers together. I have two exactly the same. They have two outputs and I wondered because I can series and or parallel each of them, can I series and or parallel them together. Cheers
+Elecifun
Two identical toroidal transformers work the best!
+Elecifun
Two identical toroidal transformers work the best!
electronicsNmore I have two identical 24 0 24 at 3.2 amps. I want to wire them together so I can have more power for my SSTC. That's the plan anyway.
That was really good, exactly what i needed. Thanks.
denis daniel Glad you enjoyed it!
wonderfully explained
Glad you liked my video. Please check out my other videos as well and share. Thanks!
Very helpful video. Many thanks for posting this :-)
Glad you enjoyed the video. Be sure to check out my extensive video playlists for other great videos of interest to you, rate thumbs up, and share my channel with friends. Also be sure to check out banggood4less.com for great deals which support my work. Thanks!
Interesting, thanks.
So as I understand it, you always want to connect the transformers' primary coils in phase and in parallel. The choice of parallel or series output comes from how you connect the secondary coils.
I was just demonstrating how reversing the 120V line and neutral will effect the phase(flow of current/direction) of the transformer at the secondary output. You can connect the 2 transformers as you would like, just as long as you locate the proper wires to be connected at the secondary for a series or parallel output.
Thanks For Watching!
Thanks for the videos, For an amateur like myself, it would be clearer if you could not have the wires all tangled together but separate from each other and easier to follow their path.
+AJ Laingser
You're welcome. You should not have any issue understanding where the wires go. I explained very clearly, and connected the wires up slowly.
Thank You!
Excellent presentation! Hope you will answer my question: If the 2 transformers not quite match, how about a dropper resistor on one transformer to make it match?
I definitely recommend using 2 the same. Thanks for watching!
Unfortunately I already have the two transformers which not quite match, hoping for a way to trim off the difference with resistor voltage drop.
@@clam4597
The stronger of the transformers will always find a way to eat the weaker.
It's one of those things you can count on having happen, like using a single resistor for multiple LEDs...
It never works quite right, then as soon as the first component dies, the rest quickly follow.
hi how would you combine the 11v and 7v tighter to make 18v? you also said those 2 pin are the primary winding so what is the other pin for?
This is a great topic for a video. The video could have been much better if all wires were shown in their entirety for starters, and neatly- not like a mess. I'm never sure how much someone knows when they use improper terminology. Your meter was not "going in to overload". It read "out of limits" and you fixed that by changing the range setting. When you use improper terminology it demonstrates a lack of fundamental understanding at worst, or at best it just confuses the people watching who don't yet understand. I don't have time to make videos, and I appreciate guys like you who do it. It's just that if it's worth doing, it's worth doing right. I never considered combining transformers, as I never saw a practical use or need for it. I guess if you're trying to save money by using a pair of 12v transformers in your junk drawer to fulfill a need for a 24v and you don't want to buy a 24v, that could be one situation where this is helpful.
Clearly you don't know the meter I have. :-) I suggest you read the manual online. OL refers to OVERLOAD.
Excellent presentation! But is it okay to connect the two primary winding in series instead of parallel? And what will the results be in the secondary?
(2) identical 120v transformer primary windings can be connected in series with 240V.
How about using a third transformer that has two primary windings, which are 1:1 with each other and with the secondary windings, as a way to use two different transformers in parallel?
Or would the same damage still occur from the second primary winding behaving like a secondary winding & passing that higher voltage/amperage back to the weaker of the two transformers connected to it?
Were a load to be placed on the secondary of this imaginary third transformer, how would the load be distributed to the previous two (unequally sized) transformers?
I assume that "the path of least resistance" applies, but that doesn't change the fact that both primary windings are on the same core, interacting with the same flux.
So i can reverse the connections by supplying 11V AC on the secondary side in parallel and get 2*120V on the primary side (measured in series) ?
If you supply AC power to the secondary, then you will get a stepped up output at the primary.
Awsome, I want to build a HV supply from 12V
Just be careful! The output can be deadly. If you have a 12VAC power supply, it should work fine stepping up.
Nice
Glad you enjoyed the video! I have a lot of excellent videos on my channel that cover many different subjects, so be sure to check out my extensive video playlists for other videos of interest to you. Be sure to rate thumbs up, and share my channel with others. Thank You
So i have this idea... i need 1000w transformer but i have 600w and a lot of ei laminates. can i make 400w transformer and connect them in paralell after bridge rectifiers so that they feed same capacitor bank with combined power?
Hello,I have a problems....I trying to complete my plasma welder prototype something that what Multiplaz 3500 supposed to be but wasn't,it even should be named Multiplaz 350 because of 350 volt output,based on your demonstration of those 2 transformers voltage increased and that exactly what I need to increase output voltage to reach 350 volt and specificly 5 amperes..I was look everywhere to find correct transformer but it like not exist at all,to build particular transformer from scratch would cost somewhere as 2500 bucks which is too much for me,all magneto wires or U core's expansive despites purchase copper wires for winding.....So I need a help how to boost up 2 identical transformers to form 350 volt,i fear by doing so with 2 step up 220 volt transformers it would give me too much over volting 440 volt,but I need strictly 350 volt and 5 amperes at secondary output...Any help would be appreciated,I been sitting on this project for maybe 2 years by now without any luck,most materials ready for assembly even self made thermo regulating circuit board and case parts for power supply..Constructing a torch took me some time and yet it still remain disassembled,I engineered torch housing so it would utilize already existed Multiplaz 3500 accessories like evaporator,quartz glass tubes,cathode holder assembly and even nozzle tip everything assembles correctly.....Took me about week to assemble power push adjustable switch that's actuate cathode and adjust power drop....I can't say it hard but if Multiplaz would be designed from beginning as original diagram on 350 volt output and 5 amperes it really would be cool plasma machine....Unfortunately Multiplaz 3500 only develop near 220 volt on output with minimal 2.3 amperes,that is insufficient for perform even brazing operation not mention for cut or weld.....The torch with minimal flow of air pressure (to avoid quartz glass tube breakage) could be adopted,high pressure must be avoided to prevent inner components damage,however air is bad electrical conductor and most won't bring any positive results...However it could be attached to helium gas instead and results would be more positive,originaly plasma machine operate on distilled water only for cutting operations with cutting tip and welding operations on 50% alchohol based mixture or diluted 75% alchohol with water,welding tip have smaller sized hole and welding performed similar to brazing or tig welding methods except far more stronger..Secondary power line is auxiliary and important to use hot clamp (not ground as used on mig,tig or arc machines),the feeling wire is grounded instead and when held should be avoid direct contact with metal othervise short circuit guaranteed...Feeling wire should be keep away from weldable metals about 2-3mm away..As numerous times Multiplaz 3500 machine was demonstrated but only as advertisement,they have a real deal for demonstration but when you buy one it not perform as described...Multiplaz corporation is only based to cut money from customers but not providing results as promised,the complete Multiplaz machine cost 2 grand's and now even more but have zero performances...Luck of correct components held my back for far too long with this project:Advantage of Plasma Welder/Cutter????You don't need expansive mig or arc welder rod's and feeding wire,you don't need any gas like argone,oxygene and acecylenne plus it takes much less time to handle work than regular machines does...What does regular machines doesn't do??Fuze welding 2 parts together with greater performance than any other welding machine..Next greatest advantage is that Plasma welding machine work only on direct current which allow steady amplitude voltage rather than always drops like in AC current and that sometimes ruins 2 welded parts creating ripples between which forces you to grind that area and reweld again until proper result is achieved....Both all type's of plasma and tig welders operating on DC current only,AC current would create too much noise and never been preferred,this is changes all picture on welding and make welding as fun as it is...When machine start it's work the reservoir must be filled till some amount would sprayed by pressing actuator button but before that machine shouldn't be turned on,this would means that water or alchohol observant material would observe all liquid and ready...When torch is filled the cap for reservoir must be closed (tightened),than by switching machine on the actuator (adjustable switch) must be pressed on to activate spark (arc) between cathode and anode so the moisture turns into steam thanks to evaporator assemble where it all processed in quartz glass tube and steam breaks between hydrogen and oxygen which further deatomised and turn into plasma beam (flame/arc),notice that produced plasma is super hot and twice if not three times hotter than regular oxy-aceccylenne torch so caution is required and never place your hands anywhere near it because amount of injury is severely high..The produced plasma beam would be hot and if set at maximum value would be rated 8000 by celcius temperature which should be say 1/4% of sun surface maybe less....Plasma torch can change welding technique,materials like tungsten,molybdenium and titanium would be melted with ease by that machine,canno't be done by regular machines and torch though..Everyone know that Tungsten only could be brazed on various cutting tools like drill bits,milling saw's/end cutters/boring bar's and lathe cutting chisel's..Tungsten won't be able to weld on any metal because various welding machines cannot develop necessary temperature to melt Tungsten,Molybdenium and Titanium..Titanium can be welded together however it required to be pre heated with torch first before welding and during cooling to avoid breakage or cracking..All those 3 metal's mostly weld in vacuum chamber where is no oxygen can be present,electron beam or laser only type of welding machines that can weld those metals and it's alloy's
This is what I want to do with my stepper motor that has dual windings that are the same. I want to use these AC windings, convert them to DC and parallel the DC voltage and current on a wind turbine. Is this possible?
man this is a great video about transformers 👍.
my question is how to increase the output current if i have 2 identical transformers?
Output current doubles when 2 identical transformers are placed in parallel.
NIce.
Thanks!
Could you possibly show a diagram of how to wire these for a lichtenberg machine?...
Thanks buddy
You're welcome! Be sure to rate thumbs up and share. :-)
For a series connection would it be better to rewire the primary connection or the secondary one? Or does it matter?
If you rewire the primary in series they will share a voltage making the secondary voltage half or in respect to the turn ratio the primary . If they of course are in phase to one another and if so the secondary turns and direction of turns must be the same if those are to be paralled . If they are to be paralled woth the primary in series (while in correct phase) then you will get a split voltage in respect with the turn ratios . ..ect still more to this explanation i have left out
I like your videos, maybe learn a little something.
+David Floer
Thanks for watching Dave.
I have a question can you wire 2 transformers to the same ac mains and use the transformers individualy instead of in parallel or series for instance use one for adustable power supply and the other to power a fan for the power supply?
Yes. We do it all the time with isolation and stepdown transformers. Fed from the same source as long as the primaries are the same.
Hi, I am new to using transformers and other electronics, and I have no idea what anyone is talking about. I have a small microwave transformer like yours but it has 5 different metal things on one side and 3 on the other and I just want to know how to convert electricity from a smaller voltage to a higher voltage. Please help me if I explained anything wrong.😫
In order to "Step Up" the voltage, you will need to use AC power. What are you looking to do?
What I'm looking to do is to change a small form of electrical power like from a battery into a high voltage.
OK. Please refer to my video playlist below. You are looking for a power inverter. I have many different videos.
Thanks! Be sure to share my channel with others and rate Thumbs Up.
th-cam.com/play/PLQ6IOhUBblU0Vq1gVIK703gtLtlEy6CRI.html
Scotlahn Mccallister You cant use Dc power for a transformer.Your battery has DC source.Transformers can only step up or step down AC supply.
What if they had a center tap winding
Is it possible to increase the outgoing voltage of an adapter? I need a power supply or transformer that can put out between 24 and 30 volts. I tried finding a low-cost 24-volt or higher adapter or transformer and have failed. I got to thinking or wondering if I could join a couple of my 12-volt transformers together. Then I could get close to the power I need. I am building a hobby electronic workbench.I want to build a fume extractor from the 12-volt computer fans that I have harvested but the PSU I built to run it doesn't have enough power. I am using an LM317 power regulator chip and the outgoing voltage should be able to put out around 30Vdc the problem is I only have a 12-volt transformer and with that it puts out 12 to 15 volts but under load, it drops to half.I am a beginner and am only learning but I don't yet know why when it's under load it drops to half. It simply can't run the fans. I think it's because I need more incoming voltage.I do have one PSU that I have mny eye on becasue it may be able to hook up straight to 110v and not need a transformer but I am not sure. This www.ebay.ca/itm/111804799607?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT kit seems to have the power I would need but it doesn't tell me how much incomming power it can handle this one has a KBL608 rectifier to transform ac to dc but I don't know how much incomming power it can handle.ANy suggestions or help would be greatly appreactiated and I am now a new sub will be wathing lots to learn more for my hobby.
Much easier to buy this:(24VDC output at 4 Amps)
bit.ly/2c7aaca
That's awesome, but what can you tell me about the kit in the link that has the KBL608 rectifier. My understanding is that rectifier's transform power from AC to DC. You see I already have this kit I forgot that I had already ordered one, I really like it but I don't know how much AC power I can plug into it without frying it.If you wouldn't mind could you just have a glance at the datasheet and give me your opinion I think that I can easily use 110vAC standard plugin I truly want a 2nd opinion. I am currently googling things I don't understand like it shows. Max. DC blocking voltage at 800v I have no idea what this means. I will have to do some researching to figure out what each stat means if you could tell me anything that will help me that would be absolutely incredible. Thanks for your time. KB420
what will happen if i connect transformer with different current and voltage ?
I really hope you were using a GFI/RCD protected mains source? Hot plugging mains with a suicide cord and alligator clips is really ill-advised. At least you had a fuse, but that wouldn't help much if you accidentally shorted before it, and it most definitely won't prevent a potentially lethal shock. I hate to be the guy calling for safety paranoia, but mains sources can kill people, even 120 VAC, and those inexperienced with working with them shouldn't follow your example.
The matching isn't critical for series connecting two different transformer secondaries, the limit is simply the minimum of the two transformer's maximum secondary current ratings. For higher voltage transformers insulation failure can be a limit when series connecting, especially with the frames bonded together and earthed. If you get the phasing wrong with a series connection there will be less voltage, in the well matched case; much less voltage, and not much current can flow into any load that was expecting their sum rather than their difference.
For paralleling them though balance is fairly critical and getting them to share the load equally requires good balance. If they are grossly imbalanced a large current will flow in the secondaries even without load (the voltage difference divided by their impedances). You can measure the current between them with your meter, if it is small, a few percent of the maximum secondary current, you can likely ignore it. In general I'd suggest never paralleling transformers unless you are really stuck with no better option. An inefficient way to force better load sharing is with series resistances, but it is basically a horrible hack. Better to just get a bigger transformer.
Thank you for posting your comment.
Let me first say that I am not your typical individual when it comes to working with 120v/240v mains power. I have a lot of experience over the past 2+ decades when it comes to wiring branch circuits, installing & replacing main panels, as well as complete service from the weatherhead, through the meter housing and in. So your concern about what I am doing(in handling the insulated live wires) should be directed at others. As a result of your comment, I added a notation in the video warning others to be very careful when handling live mains wires. I also mentioned the "One hand rule", which any electrician should know. If an individual knows very little about electricity, or has little experience working with 120v or 240v power, then they have no business duplicating what I did in the video. There is also a disclaimer in the "About" section of my channel main page. Like many electricans, I have gotten my fair share of accidental shocks over the years. Dry hands, good footwear, and the one hand rule helps keep you safe. Don't fear 120/240v, respect it.
As for the series connection, your right, it is not as critical as the parallel connection. As long as you have a very good balance, using identical transformers with a very close output(within a couple hundred mv apart), you should not experience any problems. I say this because of my own experiences, as well as all the research I have done on this subject. Parallel transformers CAN be done, as long as you know what your doing.
Thanks For Watching
electronicsNmore well said i also respect it not fear it
Can you do a video on wiring three to six MOTs together?
Dangerous to do, and you'll require a lot of power.
All the more reason.
Hi, nice video, i have a question. I have a (Grid Tie Inverter SUN 500w, that works 230v, looking inside it has 2 transformers, and on board there are 4 pins. (1-2)-(3-4) to make 230v the connetion is (2-3). but i want it work on 115v, The question is: how to connect it, keeping 500w output?, tank you in advance. NJM
Without me actually looking at it, there is not much I can do.
i have two transformers one from a old tv and a toroidal from an amp.
the transformer from the tv is 2X21V 2A and the amp's toroidal is 2X24V 2A can i connect them in parallel for 4A.(I allready did trough a light bulb and then directly and no i got the same power, my amp didn't output 200W)
somerandomguy fromthestreet Bad Idea. You need to use 2 identical transformers. Toroidals are the best, but standard E-I's work very good also.
Thank You!
i did use 2 differente transformers in series one time when trying to charge a 12V battery without a charger. It was a low current charge though so it didnt exceed the smaller transformer power but if you need to charge a 12V batt and have your main 12V power supply and a cheap sega wallwart or something like that, which cant supply a lot of current, at least it will give you a small boost in voltage to allow you to charge.
When you dont have a charger and your battery is reading below 12,5V, waiting 3 days for it to charge is the least of your problems.
The transformers don't have to be as exact if you are using them in series(especially when they will not be in continuous use), but when it comes to parallel, absolutely need identical transformers. You should make a MOT(microwave oven transformer) 12V battery charger. I have a video for that. You can get lots of power to charge 12V batteries.
Thanks For Watching!
Does high frequency E core transformers also connected in parallell the same way ?
Yes
Im just a newbie, what if I connect my two adapter(12V and 9V) in series? Is it safe?
Possible but you will get an unbalance output. Again possible but not recommended.
I have a 12-0-12 v output, on a 220v primary/source, 10A transformer. Can i increase the output to say 28 v of the transformer by adding more coils of the same type in the secondary output?
You can increase the voltage output by adding more turns of wire to the secondary, but the current output will gradually go lower.
ok, thank you.
I had a strangest experience today , I wound 1500:150 turns transformer to create 22v secondary . After testing unloaded transformer Im getting 40V , checked the main it was 220v, I'm I missing something?
Try 120v
I don't understand why you haven't even mentioned that putting transformers in series can lead to the voltage developed by the second one exceeding its breakdown level. I know you used LV transformers, but surely you should have issued a caution on this?
Never had any problems. :-) Just be sure to use 2 identical transformers, preferably toroidal.
Your comment doesn't make sense. When connecting transformers in series, any given transformer in such configuration only ever sees an amount of voltage that it produces. There is no "voltage development" of any sort.
Can i do the same thing with 2 inverters and double the power ?
No
So Can you please tell me how to do it ? Parallel 2 Inverter AC source
Its never a good idea to parallel two transformers like this. You should add a small (0R1) poweresistor to one of the connections. Although the seem the same, micro small difference in the voltages will introduce a skewed current load on the transformers.
I have never experienced any problems doing this. Get them as identical as you can, and you should be fine. I did notice toroidal transformers work exceptionally well when paralleling. Adding a .1 ohm high wattage resistor is a good idea though.
Thanks For Watching.
Yeah, you are right. And when you connect transistors in parallel, you should connect them through resistor too.
I agree with you entirely. You treat 2 transformers the same as you do power transistors by using a low Ohm wire wound resistor. The test shown does not have the transformers under load. I have had 2 transformers within 0.2V and one got rather warm and hogged the power under load (6A). 2 x 0.1 Ohm 5W wirewounds and all was well - 3A on each tran.
@@jp-um2fr Hi. how should these two resistors be connected to transformers?
i have connected the transformer in parallel . but the voltage goes up not doubled and current remains same . can you guide with right circuit diagram.
Parallel connection will double voltage but the current will stay the same as using only one trans, i.e. halve the current of each. Wiring them in series has the opposite effect - the voltage will remain the same but current will double.
@@daveb9370 it is the other way around, exactly the opposite.
Is it possible using this same method to combine three or four identical transformers for a bigger output? say you had several small transformers of the same value but needed a higher output.. does this concept get sketchy?
+Gadien Chapman
Don't push it. Two will work fine, but if you had 3 or 4 identical toroidal transformers, it should work.
ok, Thanks for your input :) (or Output :p)
hey mate, i got old pc transformer, i want to up the amp, can i just jion the yellows wires together? cheers Graham.
No
why?
Just throwing this out there is there a Transformer that transforms like .05 millivolts into say 2 volts
No, not that I've seen. Thanks for watching!
I have two 240 volt led lamps that perform poorly to say the least at 120 volts. Each lamp draws no more than 6 watts
I thought of powering them from 3 identical "wall wart" transformers, they are 120 volt AC at 17 watts without any rectifier. Output is 9 volts AC at1000mA
So here is what I am going to try.
Take two and wire the 120 volt mains leads in series that now will now serve as the secondary then connect the same two 9 volt winding's in parallel and feed it with the third in effect driving the two transformers "backwards"
I'll be sure to check the current of these and also to check for signs of over heating.
Any thoughts?
Anyone?
+Craig Nehring
Sounds like it should work. I would take apart one of the LED lamps and see if there is a capacitor in series with the power supply. If there is, double the value and try at 120v.
The power supply is fairly sophisticated as it has a dedicated power chip and tiny internal transformer/inductor
I just noticed that while the transformer input current is 17 watts @120 the output is only 9 watts (9VAC @1000mA? Must not be very efficient design so really only 9 watts ?
The only thing to do is try, I'll give it a whirl
BTW I have a boat load of these wall wart transformers lol
hi sir its me again heheheh can you build a metal detector please sir a detector that can reach up to 6ft tnxx in advance......
I have owned a few very high quality metal detectors. What determines the maximum depth are ground conditions(soil type/sand/etc), detecting frequency used, type of metal in the ground, search coil size, and most importantly the SIZE of the object. Most metal detectors will locate large objects a few feet away with no problem, but coin sized objects may only be located about 1 foot away on average. Using a large search coil may allow you to find a quarter buried about 18" deep if the coin is laying FLAT. If the coin is on edge, then the profile is much smaller. Silver and copper coins you can find deeper. They are good conductors.
Thanks For watching.
can you make one so i can make it heheheh thankss...
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