Delatsch channel is primarily about transformer winding. On my channel you can enjoy the rarely seen tutorials, tips and tricks on winding power, audio and other types of transformers for tube amplifiers, guitar amplifiers and recording gear. I also often do unwinding and reverse engineering videos of famous transformers used in audio gear and alike. On this channel I regularly encourage people to start winding their own transformer and demystifying the transformers in general.
Thanks for sharing. Have you measured how much the capacitance increases with the laquer? I guess sbout 2x? Btw old refridgerators have great vacuum pumps if youd like to try that.
Hello Marko, I am having trouble to access your web site and my account. I am using your spreadsheet and I have simple question for you. Could you provide me some way to contact you and send you a couple of lines? Thank you. Roberto - Microlatina.
You can get them on my website, check the links in the description, there is a new online version that works natively in browser and on this link there is a free calculator for power transformers: transformercalculator.com
As for the winding part it works perfectly, but the counter is clunky and sometimes jams or turns the wrong digit, so I would prefer a similar one which has a digital counter and plugs in. I ordered mine a long time ago from eBay, but I've seen them on Amazon and other places. If you type "Coil winder" it will pop up.
@@Delatsch As I understood it you're alternating sections of the primary and secondary. So after finishing the first part of the primary do you connect or even solder the end of the first part of primary to a pin from where you continue after finishing the first section of the secondary? Sorry it's a bit hard to explain I guess. Thanks
@@FloydAtema I connect them in series but only later when I solder the leads, then I solder them together to the lead or internal if it doesn't connect to the anything.
i have a cheap 12-0-12 transformer the current is unknown but im tested it which 10 ohm load and it give 600ma. it is possible get higher current after rewind it?
Im baffled, in looking for the data on the transformer on my space command 600 I was brought to this channel, only to also find it's the dude the prior owner of my roundie sent his HOT too. Small world I guess
Hi, interesting output calculator. How would you use it on a Darlington single BJT class-A with a coupled transformer output into 16ohm speaker? Output power 2watt. Power supply 20v dc.
How measure any transformer's magnetic flux value? or with a Gaussmeter?(Tesla meter) If yes how measure : For example while transformer working gauss meter's prope touch to center point of top of transformer steel? If have only core(have not any bobins ) can measure with same process to this CRGO steel's tesla (or gauss )value ? (Please describe with simple sentences becasue English is not my language.) Thanks
For transformers we don't measure it that way. There might be a way but I am not familiar with it. Usually the maximum flux density of the core laminations is given by the manufacturer. For cheaper ones it is 1T or 10,000 Gauss, for the better ones it is higher. But even with the higher quality you can calculate the transformer for 10,000 Gs to have less losses. If you have the core at home already and you are not sure what quality it is, just calculate it with 10,000Gs and it will work as it should.
Hi, that is the core that you selected, the one which you have. So, the calculated is just what the optimum should be more or less, but you need to specify what you will use exactly. It is the width of the center leg of the core times the height of the stack. Or if you have the bobbin, it would be the bobbin hole length times its width.
I don't think I have a video on testing these. I've originally optimised them for 6B4Gs but still didn't get around to buying them. I've tried it with 6L6s and the bass is magnificent, but I wasn't satisfied with the top end and it is underpowered for 6L6s.
Well, it depends on how many of them you are using. The B+ is very low, the number of filaments would determine the most of the power consumption. You could probably use EI-66 metric or EI-86 I think is the imperial equivalent. If you have my power transformer calculator spreadsheet you can determine the exact dimensions you need according to the taps you need.
Do you ever hide a fuse in the last wind of the low voltage side? I thought my 120/24 was burned up but I found a fuse a half a turn away from the stub outs that saved the transformer. Now I'd just as soon put a fuse on the outside and solder the leads together on the inside and seal it all back up. This one has the strait laminates welded where they meet the E laminates. So would have been a bit more laborious to get them apart.
@@Delatsch iIt was a 5x22 250V 2 amp time delay round glass fuse with solder pig tails out each end. I couldn't make out the 2 amp part but that fuse comes up when I search the other info. It sure saves a lot of work being in there. I still have to track down the reason it blew that fuse to start with before something else gets ruined. Its on my HVAC system and has taken out my thermostat as well.
Hi Marko! Edcor sells laminations that they say have a Gauss rating of 20,300. Would you put this really high number into your output tranny calculator or would you lower the number a little?
Hm, sounds a bit optimistic, but you can test it. Wind a simple 120V or 230V primary to 10 or 12V secondary and check if you will get the calculated voltage. Keeping the gauss level slightly lower will make the transformer run a lot cooler as well.
Wow! That counter slash winding machine is a time saver. Where can you buy parts for transformers reasonable? I found one kit at jameco and I can get a new 24V transformer cheaper.
I get them in large quantities locally here in Europe. It doesn't really pay off to wind just a few, especially if you need standard low voltage transformers. Those can be found cheap. It makes sense if you are winding a lot of transformers and the ones with multiple taps and high voltage etc.
Hello, good afternoon my friend! I have already sent several emails about transformer calculators, but so far I have not received any responses. Can you send me details. I want to buy. Thank you in advance for your attention.
Very good work! the wonders of electronics I am a lover of this art. I thank God for the privilege of learning a little about this science. Thank you very much for the complements. What God bless you always.✌🙏🙌🌹🌿
Very good work! the wonders of electronics I am a lover of this art. I thank God for the privilege of learning a little about this science. Thank you very much for the complements. What God bless you always.🙏🙌🌹🌿
I've been building guitar amps for a year . I'm about to start my 8th build . Transformers are quite expensive, and I've been thinking I'd love to build my own if it is cost-effective. I imagine it would be quite an expense to set up my shop with nessasary tools and materials.. I'm wondering what I might spend on those setup costs. And once I have the tools I need, is it much cheaper to build my own? Any insight would be appreciated!
Well, if you manage to find a good source and purchase materials in bulk and plan on building a lot of transformers then it is a lot cheaper. The initial costs can be high, to get a good winding machine, quantities of several different sizes of core lamination, bobbins, insulating materials, different gauges of wire, lead wires in all the different colors etc. And also it will take some time and a lot of destroyed wire to master the winding. I think it pays off, but the biggest investment would be time and sourcing transformer parts is no fun. :)
what's the air core gap for? what happens if you just stick the EEs and IIs together? i have one transformer here of that same size, i removed all wires and then i put 3 turns of heavy 6 mm2 wire on it, i need 0.50 micro Henry at 100 Amps , 24 volts; but the EEs and the IIs are welded together just like in a microwave oven trafo, will that work? edit : later, by trial and error i got it: microwave trafo,sawed off the IIs(the "cap"), then all wires removed, then 11 turns of 6 mm2 wire; bingo!! the power draw at IDLE went down from 3.6 Amps!! (no coil, just a straight 6 mm2 wire) to .6 Amps ( this at 48 volts, on a 14 Kg steel toroid trafo, 2000 Watts+). note: the gtrafo must stay OPEN, the "cap" not on, just the EEs, no IIs. with the cap on it buzzes and the Amps jump to .8 Amps.
Hi Marko! Thanks for your vids. I bought your bundle last week and look forward to winding soon! One thing though about your rec of splitting large wires into two parallel bifilars; if your calculate the cross-sectional areas of the large and smaller wires, you’ll find half-thickness wire is actually far lower than half the area of the larger wire. Two runs of 2/3 the larger wire is closer.
