Author Topic: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"  (Read 46353 times)

Offline petespaco

  • High Voltage Technician
  • ***
  • Posts: 178
  • Karma: +9/-0
    • View Profile
    • French Creek Valley Activities
Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
« Reply #300 on: September 10, 2020, 11:50:18 PM »
The link for power supplies that you sent shows a whole range of models.
  I hope you really DID get the 48 volt 1000 watt unit.  If so, what AC input voltage are you using?
If, by chance, you are NOT using a 220/240 volt AC input, the power supply probably will not make the full 1000 watts.
You might try testing the supply itself with an appropriate load to see what it is really capable of.  (the heaters from old electric clothes driers can be very handy for this.
I agree with Mads that the server power supplies are a great power source for these induction heaters.

Pete Stanaitis
---------------

Offline petespaco

  • High Voltage Technician
  • ***
  • Posts: 178
  • Karma: +9/-0
    • View Profile
    • French Creek Valley Activities
Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
« Reply #301 on: September 22, 2020, 01:48:11 AM »
Melting some Cast Iron with the 2500 Watt ZVS Induction Heater:
I just put up 2 videos on the subject:
-The first one:  Making some minor changes to the 2500 watt unit and a few other preparations:
/>
-The second one:  Actually doing the experiment to see if we CAN melt ferrous materials:
/>
Pete Stanaitis
---------------

Offline klugesmith

  • High Voltage Engineer
  • ****
  • Posts: 299
  • Karma: +7/-0
    • View Profile
Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
« Reply #302 on: September 22, 2020, 05:42:28 PM »
Nicely produced, Pete.  Thank you.  Is your ingot mold made of graphite?

Not to go too far off track, but who knows where to find that youtube video of aluminum-pouring gone wrong?
We see two teenage boys in white lab smocks and partial PPE, opening a small front loading kiln on a workbench. 
One takes out a crucible of molten Al, about the size of yours, and pours it into what appears to be an iron mold.
A couple seconds into the pour there's a sharp pop.
Camera continues to roll as the kids deal with small pools of Al starting fires on the bench,
at least one significant droplet that landed in pocket of someones's smock, etc.
No significant injuries or permanent scars from that incident.

We can only hope that youtube has a net positive effect on safety of new generations of nerds.
Pete's productions are good.

Offline petespaco

  • High Voltage Technician
  • ***
  • Posts: 178
  • Karma: +9/-0
    • View Profile
    • French Creek Valley Activities
Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
« Reply #303 on: September 22, 2020, 08:15:40 PM »
Quote
Nicely produced, Pete.  Thank you.  Is your ingot mold made of graphite?
Thank you for your kind words, klugesmith.  Yes, it is made of graphite.  I spend 'way too much time explaining its fabrication on the preparation video.
Regarding the aluminum going wrong:
  I didn't say it in the video, but before I did the test, I baked the sandbox and crucible for an hour in a 250°F kitchen oven, to make certain there wouldn't be ANY moisture.
  i/we have had a couple of incidents in the past that brought that issue into crystal clear view!!!
For instance:   a bit of grease left in a bearing shell reacts exactly the same way that water does.   Seeing molten babbit squirting 10 feet into the air does leave a lasting impression.  Dry, Dry Dry!!!

Pete Stanaitis
---------------

Offline extremeodd

  • High Voltage Enthusiast
  • *
  • Posts: 2
  • Karma: +0/-0
    • View Profile
Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
« Reply #304 on: September 23, 2020, 12:35:16 AM »
Oh man this thread is a wealth of info on these various Chinese zvs induction heaters, was well worth the time it took to go through it in it's entirety. First off I just want to thank you Pete for your meticulous documentation of seemingly every last detail when doing or changing anything with these circuits. I've been to your site quite a few times while trying to learn what I can about how these work, why these work, why these like to randomly die, and how to make them work better. By far you've been my most helpful resource.

I currently have like 4-5 of the "5-12v" modules that are all the same design with slight variances in smd component sizing, one that uses a center-tapped coil (single toroid, meant for driving the included flyback transformer) that claims 12-36v input and has ifrp250n mosfets, and finally, one of the ones that is sometimes listed as "1000w" but still runs the bog-standard 2 caps/2 chokes setup with ifrp260 mosfets. Oh, almost forgot the 3.7v-4.2v unit, mostly because I've yet to find anything it has any application for due to its extremely weak performance https://www.ebay.com/itm/ZVS-Induction-Heating-Machine-Module-Low-Voltage-3-11V-4-21V-High-Frequency/292287860722.

I'm using these units mostly for heating up a "Dynavap VapCap" which is a 'flame powered' herbal vaporization device. Basically it's a stainless steel one hitter that has a cap that when heated to the correct temperature makes a loud click via a bimetallic disk, this indicates that it's ready for a drag. Normally the user would heat the end with a butane torch while constantly rotating but this leads to inconsistent performance and hotspots which can cause combustion instead of vaporization. That's where the cheap 5-12v induction heaters really shine, with a solid 12v psu it'll heat the dyna to temp in less than 10 seconds usually.

Not being one to leave well enough alone I've been trying to optimize the setup to work well on lower voltages as heating times dramatically increase once the voltage is under 12 and I'm wanting to make some portable setups that more pocket-friendly than 4 18650s allow. Most of my focus has been on flux control/concentration, stainless is a fairly poor metal for magnitism and I figured focusing any stray flux could be very beneficial. With that said, if finding solid info on the how/why of the chinese zvs induction heaters is tedious, finding anything about flux control in induction heating is just painful.

Theres a company that produces a putty of sorts that you cover the outside of the with and it concentrates the flux in the center of the coil (or on the inside of the coil if it's doing bore heating, on one side of a flat coil, etc) The companies site can be found here https://fluxtrol.com/magnetic-flux-control-in-induction-installations . Sadly I haven't found much in the way of disccusion on the topic anywhere on the internet and it doesn't appear the average person can buy it directly from the company.

The other "technique" I came across with some actual discussion, albeit it's posts from a single guy, using a ferrite U core with a corner broken off to create an intensely focused spot of heating. Basically, the U core goes through the work coil and the work piece is placed in the core's gap. He was using it to solder copper joints super cleanly with no visible color changing/torch damage. It appeared to work impressively well and I've had some limited success trying to use it for my purposes. If you want to try it yourself just take a ferrite core and clamp it with the one leg inside the work coil and a piece of metal (I use razor blades) pinched in the other leg. With 12v and about a 4ish amp load it'll almost instantly make the area that is in contact with the ferrite red hot, this could have applications for blade heat treatment imo.

Otherwise, my time with these devices has been mostly spent trying to fully grasp their operation and what causes them to randomly die. I've had 3 of the 5-12v units fail with no obvious signs of why or what failed and I managed to kill the centertapped work coil unit by using it to load test a 12v 30a psu I modified to be adjustable to ~20v. It simply stopped drawing current when I got up to about 12a@18v, I'm assuming one or both of the ifrp250n mosfets blew. Looked into replacing them and it's honestly not worth the trouble considering I can get another for $18 that also includes a DST flyback transformer.

Figured I'd try to contribute what little I've gleaned that I didn't see come up in the thread yet.

PS: Here's a quick tip for when you copy ebay/amazon/whatever URLs to share: You only need to copy up to the "?", everything from the "?" on are user data parameters that only serve to make the link excruciatingly long. (Also they are used for tracking where the person came from, amazon uses it for commission on affiliate links) For amazon the cutoff spot is "ref=pd", you only need the stuff before that for the link to work.
For instance:
https://www.amazon.com/SainSmart-Voltage-Switching-Generator-Ignition/dp/B00ZTTVX4O/ref=pd_bxgy_img_2/140-7389242-9697844?_encoding=UTF8&pd_rd_i=B00ZTTVX4O&pd_rd_r=e7161629-c58e-48bd-ba5a-87f0877b1b5a&pd_rd_w=QDj6G&pd_rd_wg=NjoIX&pf_rd_p=ce6c479b-ef53-49a6-845b-bbbf35c28dd3&pf_rd_r=JSFD7Y9DMKQYSXXED3MC&psc=1&refRID=JSFD7Y9DMKQYSXXED3MC

Turns into

https://www.amazon.com/SainSmart-Voltage-Switching-Generator-Ignition/dp/B00ZTTVX4O/

Or
https://www.ebay.com/itm/Digital-LC100-A-LCD-High-Precision-Inductance-Capacitance-L-C-Meter-Tester/123977420869?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D225086%26meid%3D8c6a5bce9c874c0f83bed2e2a2b03f4f%26pid%3D100675%26rk%3D3%26rkt%3D15%26mehot%3Dnone%26sd%3D292287860722%26itm%3D123977420869%26pmt%3D0%26noa%3D1%26pg%3D2380057&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3Aac9eeaf5-fd23-11ea-87c6-2eff4665e3f4%7Cparentrq%3Ab7f388d81740aadcf4cf25a4fff40952%7Ciid%3A1

Turns into

https://www.ebay.com/itm/Digital-LC100-A-LCD-High-Precision-Inductance-Capacitance-L-C-Meter-Tester/123977420869

High Voltage Forum

Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
« Reply #304 on: September 23, 2020, 12:35:16 AM »

 


* Recent Topics and Posts

post Re: Fake or Real DC to DC Solid State Relays.
[Electronic Circuits]
klugesmith
Today at 05:14:45 AM
post SSTC with a ballast
[Solid State Tesla Coils (SSTC)]
shifatsrm09
Today at 03:01:26 AM
post Re: Fake or Real DC to DC Solid State Relays.
[Electronic Circuits]
petespaco
Today at 02:43:27 AM
post Re: 833A Maximum Dissipation Ratings
[Vacuum Tube Tesla Coils (VTTC)]
T3sl4co1l
October 28, 2020, 11:57:11 PM
post Re: Current transformer for narrow spaces
[Laboratories, Equipment and Tools]
klugesmith
October 28, 2020, 11:53:40 PM
post Re: How to drive these flybacks?
[Transformer (Ferrite Core)]
Alberto
October 28, 2020, 08:53:46 PM
post Re: How to drive these flybacks?
[Transformer (Ferrite Core)]
davekni
October 28, 2020, 08:29:08 PM
post Re: Polyphonic Interrupter with STM32F103C8T6 (Bluepill)
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Zipdox
October 28, 2020, 07:27:43 PM
post Re: Current transformer for narrow spaces
[Laboratories, Equipment and Tools]
klugesmith
October 28, 2020, 05:14:51 PM
post Re: SuperCascode Designs
[Solid State Tesla Coils (SSTC)]
kyledellaquila
October 28, 2020, 06:41:46 AM
post Re: 833A Maximum Dissipation Ratings
[Vacuum Tube Tesla Coils (VTTC)]
kyledellaquila
October 28, 2020, 06:30:05 AM
post Re: How to drive these flybacks?
[Transformer (Ferrite Core)]
Alberto
October 28, 2020, 12:15:00 AM
post Re: How to drive these flybacks?
[Transformer (Ferrite Core)]
ElectroXa
October 27, 2020, 11:21:00 PM
post Re: Capacitors and arcs
[Beginners]
Alberto
October 27, 2020, 11:06:37 PM
post How to drive these flybacks?
[Transformer (Ferrite Core)]
Alberto
October 27, 2020, 10:14:33 PM
post Re: Lecroy Waverunner 6000a - is it worth for hobby use?
[Laboratories, Equipment and Tools]
Twospoons
October 27, 2020, 10:07:01 PM
post Re: Lecroy Waverunner 6000a - is it worth for hobby use?
[Laboratories, Equipment and Tools]
flyglas
October 27, 2020, 07:41:41 PM
post Re: Lecroy Waverunner 6000a - is it worth for hobby use?
[Laboratories, Equipment and Tools]
plasma
October 27, 2020, 10:57:52 AM
post Re: Lecroy Waverunner 6000a - is it worth for hobby use?
[Laboratories, Equipment and Tools]
Mads Barnkob
October 27, 2020, 09:17:46 AM
post Re: Lecroy Waverunner 6000a - is it worth for hobby use?
[Laboratories, Equipment and Tools]
Hydron
October 27, 2020, 08:01:12 AM
post Re: Lecroy Waverunner 6000a - is it worth for hobby use?
[Laboratories, Equipment and Tools]
Twospoons
October 27, 2020, 05:13:58 AM
post Re: IGBT brick internal gate resistor power dissipation
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
October 26, 2020, 10:25:19 PM
post Re: IGBT brick internal gate resistor power dissipation
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
October 26, 2020, 09:43:44 PM
post Agilent Markes UNITY Thermal Desorber Teardown - Gas Chromatography
[Electronic Circuits]
Mads Barnkob
October 26, 2020, 08:29:12 PM
post Re: IGBT brick internal gate resistor power dissipation
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
October 26, 2020, 08:23:48 PM
post Re: 833A Maximum Dissipation Ratings
[Vacuum Tube Tesla Coils (VTTC)]
Mads Barnkob
October 26, 2020, 08:19:37 PM
post Re: SuperCascode Designs
[Solid State Tesla Coils (SSTC)]
johnf
October 26, 2020, 07:35:00 PM
post Re: Fake or Real DC to DC Solid State Relays.
[Electronic Circuits]
petespaco
October 26, 2020, 06:02:01 PM
post Re: Fake or Real DC to DC Solid State Relays.
[Electronic Circuits]
petespaco
October 26, 2020, 03:22:08 PM
post Re: Fake or Real DC to DC Solid State Relays.
[Electronic Circuits]
T3sl4co1l
October 26, 2020, 03:09:06 PM
post Re: SuperCascode Designs
[Solid State Tesla Coils (SSTC)]
T3sl4co1l
October 26, 2020, 02:55:59 PM
post Re: 833A Maximum Dissipation Ratings
[Vacuum Tube Tesla Coils (VTTC)]
T3sl4co1l
October 26, 2020, 02:49:25 PM
post Re: RC snubbers
[Solid State Tesla Coils (SSTC)]
T3sl4co1l
October 26, 2020, 02:41:18 PM
post Re: steam engine
[Capacitor Banks]
plasma
October 26, 2020, 11:35:48 AM
post Re: Lecroy Waverunner 6000a - is it worth for hobby use?
[Laboratories, Equipment and Tools]
johnnyzoo
October 26, 2020, 09:57:55 AM
post Re: Popped two IRFP460s while testing at 325V
[Solid State Tesla Coils (SSTC)]
Zipdox
October 26, 2020, 08:38:51 AM
post IGBT brick internal gate resistor power dissipation
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
October 26, 2020, 05:33:01 AM
post Re: steam engine
[Capacitor Banks]
Twospoons
October 26, 2020, 04:39:41 AM
post Re: Fake or Real DC to DC Solid State Relays.
[Electronic Circuits]
davekni
October 26, 2020, 03:02:12 AM
post Re: steam engine
[Capacitor Banks]
plasma
October 26, 2020, 01:48:58 AM
post Re: Popped two IRFP460s while testing at 325V
[Solid State Tesla Coils (SSTC)]
davekni
October 26, 2020, 01:03:25 AM
post Re: steam engine
[Capacitor Banks]
davekni
October 26, 2020, 12:51:33 AM
post Fake or Real DC to DC Solid State Relays.
[Electronic Circuits]
petespaco
October 26, 2020, 12:35:41 AM
post Re: DIY capacitor
[Capacitor Banks]
Alberto
October 25, 2020, 11:46:31 PM
post Popped two IRFP460s while testing at 325V
[Solid State Tesla Coils (SSTC)]
Zipdox
October 25, 2020, 11:25:26 PM
post 833A Maximum Dissipation Ratings
[Vacuum Tube Tesla Coils (VTTC)]
kyledellaquila
October 25, 2020, 11:16:17 PM
post SuperCascode Designs
[Solid State Tesla Coils (SSTC)]
kyledellaquila
October 25, 2020, 10:36:58 PM
post Re: DIY capacitor
[Capacitor Banks]
plasma
October 25, 2020, 09:59:37 PM
post Re: steam engine
[Capacitor Banks]
plasma
October 25, 2020, 09:50:03 PM
post Lecroy Waverunner 6000a - is it worth for hobby use?
[Laboratories, Equipment and Tools]
flyglas
October 25, 2020, 07:29:38 PM

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 
SimplePortal 2.3.6 © 2008-2014, SimplePortal