The Radio Mechanic - 2016-03-28
Produced with CyberLink PowerDirector 14 See variations of the schematics at my website. http://www.crankyyankees.com Vernon.Henry13@gmail.com From the home page click on N1CKX
I join Bora's coment about your very clear, comprehensive explanation of the technical details. Thank's for making such a nice video.!
You are vey welcome, and thanks for watching.
Really nice video. I always wonder if these Chinese induction heaters/zero voltage switches are any good. Your diy coil is probably heating up even more through the skin effect: All the current is flowing on outer part of the conductor with that high frequencies :)
Thank you for giving me some really great ideas on improving this heater. Peace too.
That transformer and capacitor you found..Brings a tear in my eye..How come i never find those!
"mine of course is HUUUGE!" lol
excellent equipment you have thanks, just let me know how long two devices (chines version) can work none-stop?
thanks
HI Seyed, You are welcome. The answer to your question is difficult to exactly define. It will depend a lot on how much power is injected and what is done for cooling. My Home made unit will over heat the capacitors within a few minutes. The Chinese unit runs much longer as it has R.F. rated capacitors used in cook top units. Also the coil on my home made unit gets very hot as it is simply made from wire. The Chinese unit uses copper tube/pipe which I circulate water through. I have also mounted a fan to cool the capacitors. The fan is rated for 220 volts but I run it on 120 so it is very quiet. With 48 volts in and about 10 amps ( 480 watts input ) I can safely run for at least 30 minutes. The real limitation is the capacitors. They are rated for 50 KHz and I am running them at 3 times that frequency so they get hot. R.F. heating is a big issue with designing these units.
You will need a 48 to 50 volt supply that can supply around 20 amps of current.
Turn on the power supply first, then use a second switch to turn on the DC to the induction heater.
I have one
The Radio Mechanic
Hey will a 48v 10amp power supply work also? Awesome video, best one I've seen regarding these induction heaters
The Radio Mechanic, I in a past lifetime did electronics as a trade, I have forgotten more than I learned and am so out of touch with current (pardon the pun) tech as to say I would have to go back to tech to try and catch up.
One thing mentioned in this thread does remind me of some resistors I used to have from an older Radar circuit. They were glass encased (for high voltage I think) Bi-Filar wound wire resistors to reduce the inductive influence on the circuit they were used in. I also remember that carbon resistors with the way they gain different values can also have this inductive effect to perhaps a lesser extent in a very high frequency cct.
Please correct me if I am wrong in saying that as I think I should do a refresher of sorts and would prefer to have good information than go on believing something that is wrong.
Cheers from John, Australia.
Is that why I never had any latch up problems using lead acid batteries to power my ZVS drivers, because they can supply tons of amps with no delay? Literally from 12v to 48v drawing huge currents I've not had one failure powering induction heaters and flyback transformers for arcs.
To each their own. I get more comments for than against..
Thanks so much for this video!!! I have been needing to produce a single pulse/polarity/hot (as practical) spark from an automotive ignition coil: do you have any ideas?
Thanks again...
dale nassar For making easy Induction Heating Circuit without center tapped Links Below.. Don't forget to subscribe
1. https://youtu.be/GWZJt_vHyq4
2. https://youtu.be/4hrXXeKrXAo
3. https://youtu.be/tqupZLApSIA
This blew my mind, thank you for this video
My mind has been gone for a long time....Your welcome....
Great video thanks for doing it it! I learned a ton. 👍
thanks, a thumbs up from me and a sub, great video of the coil and spark plug!
Thanks Snaproll, happy to hear you enjoyed it. How about a ride in the Pitts?
thanks, it is a nice video. Just if we use two boards and the output link to one coil. is this way increase the watts to 2000w
Wow love the test gear you have! Now I understand why I blew up my Chinese ZVS unit ...thank you.
Your Welcome, thank you for watching.
Useful review, & lots of good information. Thanks!
Thanks, and Thanks for watching.
Hi thanks for this amazing video
I'll buy one
I want to use it for water heating in my house is it strong to resist for long time? This marque zvs
Great video thanks👍 i was curious to see your version but still couldn't help watching it all,so I'm now going to look at your other videos.
anyone wanting an easy power supply make a 50v secondary on a Mot then rectify it.
Oh nice I just left Manch a lil over a year ago, coulda had some great project fun you may have seen me in the local clubs (if ever in any) working on the pool tables for the haunts! Anyway great vid!!
Does the metal you will be melting and re melting react the same as steel? I would think that being nonferrous would make that a bit different... Just curious. Great Vid, very informative, thank you for going a bit in depth. Now Subscribed. Michael in Colorado.
Wow, thanks very much, I have just learnt a lot just now. Thank you very much
Thank god i was watching these induction videos before i used mine otherwise it would have exploded XD
Thanks for the information and excellent video you are very good at explaining each process.
Your Welcome, Thank You for Watching......
wow i love that home brew
Real simple to make one, you just need to get some RF rated Capacitors. Parts for a counter top inductive cook stove will work great.
Good video, you have a new subscriber. Many thanks for sharing, learned a lot 👍👍
Thanks for watching. Appreciate the feedback.
I think I can see the more powerful spark occuring when you 'release' the primary power.
@
dale nassar
that is how it works , the points open (power off) just when the spark is needed :-)
Thank you for the video. I want to order one of these and use two lead acid car batteries in series for an input of 24 volts. What kind of on / off switch do you recommend? This will be an experimental project for annealing rifle brass casing in preperation for reloading.
Is there any safety hazards when using this with low voltage supply? I'm worried about the LC circuit shocking me.
Nice video!! I've learned even more!! Thx.
Your welcome, thanks for watching
Excellent comparison. Immediatelly subbed to your channel. Keep good work!
Thank you, appreciate the support.
extremely informative video. Great job
The advice you give at 8:00 is exactly why the guy of channel "AVE" blew up his induction rig and blamed the chinese.
I just received a supposedly 1000W 50A from china (35$ !), can't wait to try it out !! I'm hoping I can get rid of my acetylene torch after that !
I don't understand why they didn't add the needed components to prevent a slow rise from locking it up in the first place, but it does look like they attempted to point it out.
you cannot control a self driven oscillator like that. soft start is only available with a controlled oscillator.
+Richard Smith yeah, i bet i can put an optocoupler into the gd and the input to a capacitor.
very nice video, I like it :o) you got a new subscriber
Well, It never crossed my mind that that's what the cap in an ignition circuit was actually for. Makes sense now, thanks!
@ ~ 1:50 Don't you mean 470 Ohm (not 4700 Ohm)?
...Really enjoyed this video...
Hello, excellent video. can you please tell me if I can use the chinese version to melt some gold in a crucible? thank you
The solder I am melting is 63/37 alloy and melts at 183c. I have JUST managed to melt aluminum ( 5052 alloy ) and it melts around 659c. Gold surprisingly melts at 1063c.This little guy/toy is likely not going to reach that point. However if you use a graphite crucible ( I am using a ceramic type ) the crucible might get hot enough to melt the gold if yousurround the whole coil and crucible with insulation. But I have not tried that and do not have any graphite crucibles. This unit really is a toy.
Thanks, that was most informative. I watched the whole thing through.
Thanks for watching and the nice words. A nice counter to the comments from "Daite Dve" who said to me quote "Dude you are Soooo Boring." Cant win them all. :-)
iam zaheer induction idone repaird 36000 induction all conpanies i had been fully experince 27 yers
It seems the coil made from copper tubing are touching in some spots and wherefore shorting?
Here in the U.S. we have a home improvement stores ( Home Depot and Lowes ) both sell them. Just do a search for counter top inductive cook stove. There are many.
Its like you took it out of the packet and wanted it to break lol
Hiya, thanks for a great video!
How would this setup work out with extending cables to a handle with a secondary switch where the coil is mounted? Jumper cables or something massive to reduce voltage drop..
Would be a nice and handy setup for car repairs where space is limited.
Long feed lines to the coil might prevent it from oscillation. There actually is a commercial unit on the market for automotive work. Everything is built into the handle.
Connected this to a 25A DC SSR. SSR fried after <50 on/off (stays on permanent). Is SSR wrong relay? Will a flywheel/freewheel/flyback diode help?
Probably R.F. is betting back into the SSR. I measured a few hundred volts of R.F. on the working coil. I would try a combination of higher rated current SSR, Flyback diode and put a choke between the unit and the SSR.
One SSR mfr provides a 100V, 10A diode to be placed across an inductive load. When the SSR turns off, the magnetic fields will ram current against the now open SSR, easily damaging it. The diode allows these currents to recirculate in the load until they have lost their energy.
My PS is 36V, 16A, will add a 100V 30A diode across load to see if that'll prevent burnout.
Will also as you suggested use at least 40A SSR. Thanks.
21:29 thanks for that annotation, that was exactly my question on another ZVS video
Thanks for watching, glad I could help.
Thanks for sharing. Very informative/educational and very good setup. You are absolutely right about capacitors. Inspiring me to go out and try again! Kind Regards. Pablo
Your welcome....
The feedthrough capacitors on your home brew unit have metal cases. With RF flowing axially the metal shells are going to act like a one turn transformer with a shorted secondary. It's going to drain power and get hot as hell.
Pretty sure the parts from your microwave were made in China.
can I melt aluminum with induction?
Love the explain of all the technical details. But the motor cycle revving is too annoying
10:44 which analogy? It's not a resonant coil? -thx!
Bora Yurtoren - 2016-09-15
There are a lot of people that knows a lot, but very few that can explain things in the way that anyone can understand, like you do. Thanks a lot for taking the time.
The Radio Mechanic - 2016-09-15
Bora, thanks for the nice comment. Makes it worth the work.