Thanks for making this video! I enquired about the DC load because I had just bought one myself after spending too many hours looking at loads online. For the past couple of years I had been using one I borrowed from work, a Maynuo M9812 but it recently died. I ended up getting an Ivytech IV8712. Have you tried out the PC based control on your Kunkin? I was amazed to find that they aren't isolated from their test terminals, so I also had to get a USB isolator to protect my computer. Luckily the maynuo died without taking my PC with it, but I'm not taking any chances again.
@@KissAnalog I'm still awaiting delivery. Unlike Amazon, stuff from Alibaba often takes like 3 weeks to arrive. The price difference is substantial enough that it's usually worth waiting though.
I’ve an inexpensive board purchased from amazon that I’ll review here very shortly. Something that might work for those looking for more affordable options. I’m still looking at the Ivytech...
I’ve just been looking at building an active DC load device myself - CC, CW, CR, with voltage sensing and transients - albeit limited to around 150w. It’s going to cost me as much as this Kunkin device would! And it’s nice to see how it works. Man, this is not a cheap hobby. I’ve got that plan running alongside a plan to build a power supply: it almost seems that you want the one, to build the other. Here in the UK, it seems like the English celebrate St. Patrick’s day as much as the Irish! Well, maybe not as much, but weirdly there’s very little celebrating of St. George’s day, who is the patron saint of England. Enjoy your party!
I’d be very interested in seeing your plans for the active load. You are right, it is not inexpensive hobby! But it has gotten to be better;) St Patties day gets a toast here in Utah;). Thanks for chipping in!
I'd like to say it was my plan but that would be taking on undeserved glory! www.scullcom.uk/category/projects/dc-load/ It does look pretty good though - component list I have so far is around £220 so I don't know really - for that price I could get a good quality used one, or a cheaper Chinese one from banggood or alibaba,but I do worry about the quality of stuff from these sights - did you take a look inside your Kunkin? Part of why I'm looking at this is for the experience of building/testing/analysing my own, plus the fun of course and there are a couple of things I'd like to change - the interface for example (yet more money :) ). @@KissAnalog
Definitely, and I'd follow along. Scully's looks good, he finished it (with a case) and I've got the PCB in my basket with JLCPCB, but it's expensive so I'm still a little unsure. I'm practicing my SMD soldering, and designing in KiCad to produce my own Power Supply PCB which I'm getting closer to. The only thing I'd say is "Please don't abandon it half-way through", it's really disappointing when the project gets so far and then goes quiet! If you do, I'd pull it together as you go, so you get some 'beginner's feedback', alongside my power supply which I'm working on.@@KissAnalog
Andrew Johnson Thanks - I checked out scullcom, he sure has had an interesting career. Too bad I’m not doing this full time, there are so many projects! Thanks for the support!
Haha Eddie, I was totally laughing at :30 in lol. As I was sitting here watching i kept thinking " I don't know whats making my mouth water more, that gorgeous GW Instek scope or the Kunkin electronic load " I came to the conclusion its a combination of them both lol. Another very informative video , keep up the great work brother!!
As always a really great video and you are again wary good at framing so it is wary clear what is going on. I do also like that even that you own a top shelf Kikusui, you still take your time to demonstrate a unit that non experts are more likely to have or buy. :-)
Thank you - I appreciate the support!! Yes, I do want to use equipment that can be purchased today - and not just the equipment that one might need to acquire by luck finding a great price used.
@@KissAnalog Thanks, oh forgot about your question to all:-) In Denmark this is not a known saint at all and we do therefore not make anything out of it, it's a normal, run of the mill day. :-)
Im starting to look for electronic load. I love the functionality of this load, but like the price better of the MakerHawk. Anything new I should consider? BTW, its interesting to watch the evolution of your bench over the years. Thanks for all the information you share!
Hello Eddie. In the Netherlands we don’t celebrate Saint Patricks’s Day either. Though quite a few people are aware of it through popular culture influences (through movies and such). We are likely missing out on a couple of things, however we just had ‘Carnaval’ here, so now we are even? ;) Seeing you in that ornate shirt (lol) I started to wonder if you were American or Canadian? I was assuming American, but afaik the Canadians also seem to embrace Saint Patricks’s Day. Any Irish blood in there and is that a factor for celebrating? Good video btw. I recently purchased a different electronic load, a Rigol DL3021 that now lives rack mounted right beside a Rigol DP832 PSU. I don’t use a load often, but they are very convenient to have. However, for the less fortunate, maybe you could demonstrate (and compare) cheap alternatives (like power resistors and alike)?
Skull HQX Thanks for that - where does Carnaval come from? Is this a great time to visit the Netherland? I’m an American here in the state of Utah. We like celebrating at any excuse;) I’m from Finish descent, mostly, but I there’s a bit of Irish in there. I like that idea, I’m trying to keep in mind the more affordable methods. Thank you for your input!!
Can you test 18650 battery and make a short video? I'm looking for inexpensive Programmable DC Electronic Load Battery Capacity Tester - like this one. Thanks again for your video! Love your shirt!
I have a question for you, that I hope you find interesting. :-) You have the Keithley 2015 thd multimeter that is great at measuring thd, but do there exists newer / other pieces of gear that can measure thd, what do manufactures use?
That’s a great question! I actually have a very nice THD meter, but it is in storage. However, I’m very interested in a method using the FFT function on my oscilloscope! I’ll have to do a quick video;)
Hello, I bought the kunkin KP184, only it was delivered without software for the PC. Where can I get the software? hope you have a good advice for me :)
Giovanni Seccabiani I’ll let you know if I get a response. I’m asking for it. There is a link on Amazon where you can ask and the vendor is supposed to get in contact. I’m still waiting...
@@KissAnalog Many Thanks. I wrote to the seller on amazon and also directly at kunkin. wait for an answer. because you were doing a review, you would have more info. looking forward to answer if you know more
hi, I did it and got the software. she is absolutely shit. nothing is translated, it just crashes and you get to kp184 no connection. I have given everything back now. I'll have to buy something decent. If you want I can send you the software, write me a personal message for the email address.
I still have not recieved even a reply. I have lost confidence in this load,so I will do an updated video on the issues I’ve had. I’d still like the software Incase someone else asks for it. KissAnalog@gmail.com
Hi Eddi, did anyone understand the multimachine mode? it should be possible to sync more than one load via master / slave operation. i have 2 loads and was not able to sync them via the RS485 wire on the back? Does Anyone have an idea?
Hi Kriss, I also bought KP184 in February this year. The main purpose was to investigate DCDC converters and other PSUs. I tested this load with car battery + tektronix 350MHZ digital scope + (AC + DC) 50MHz tektronix current probe + two digial tektronix 6.5 digits table top multimeters. I can say this load have pros and cons. Pros: average current accuracy is within 1%. CONS: Lets configure this load to 200mA CC and you will see ripple at level 270mApeak-peak. This ripple comes from poorly layouted power supply and grounding. The period of oscillations is in range up to 100Hz. I opened cover and replaced power supply with laboratory multi-voltage DC power supply. It lowered ripple about 10 times! Voltage rectification is done close to main current sensing amplifier and high resolution ADC. The same situation with LED display connection - close to ADC. Layout is 2 layers but mechanically a little bit complicated to disassemble. I think reverse engineering of this part could help to cut ground traces properly and connect ground in star topology could help. I tried to contact manufacturer but each email I sent to them echoed from Chinese firewall. If someone would be interested I have test report which I wanted to share with manufacturer to help me solve this issue in fast way. Kindly Regards Szymon K.
Great info!!! I’m just starting to use this Kunkin, but I have noticed the high ripple. With your test, I think I can improve the design - that should make a great video! If you have any further info - I’d be happy to look at it.
Yes, I am also assuming that it can be fixed but still looking for contact with manufacturer. Actually I don't have enough free time which I could devote to playing with this. We paid for properly working deivice so they should help us, even sharing 1/4 of front side upper PCB gerber files could be in help.
Szymon Kielka I agree - they should be much more responsive! I still have not received the software... I’ll do a follow up video to show the short comings and possible solutions for those that like to tinker.
There seems to be a fix for the ripple problem. Philippe Demerliac: th-cam.com/video/NKwUACkCcFs/w-d-xo.html Quote Philippe Demerliac: Hello, the solution is to remove the capacitor juste bellow R10, the one that were my brucelles is at th-cam.com/video/NKwUACkCcFs/w-d-xo.html?t=1157 It works very well, the ripple is really reduced.
I received on yesterday, nice unit, testde a new RD6006W power supply which i also assembled together and tested it with the KP184, had fun with it, the fan on my kp184 is al little noisy , i opened up the case but al seems to be build in good order, so it must be the fan layering i think.
That's great! I don't think my fan is noisy - I'll have to pay more attention - maybe I've gotten used to it. There is a mod for the KP184, so I'll make a video about it.
Thanks for making this video! I enquired about the DC load because I had just bought one myself after spending too many hours looking at loads online. For the past couple of years I had been using one I borrowed from work, a Maynuo M9812 but it recently died. I ended up getting an Ivytech IV8712. Have you tried out the PC based control on your Kunkin? I was amazed to find that they aren't isolated from their test terminals, so I also had to get a USB isolator to protect my computer. Luckily the maynuo died without taking my PC with it, but I'm not taking any chances again.
The Ivytech looks interesting - is it working well? Thank you for the feedback!!
@@KissAnalog I'm still awaiting delivery. Unlike Amazon, stuff from Alibaba often takes like 3 weeks to arrive. The price difference is substantial enough that it's usually worth waiting though.
I’ve an inexpensive board purchased from amazon that I’ll review here very shortly. Something that might work for those looking for more affordable options. I’m still looking at the Ivytech...
@@KissAnalog Looking forward to the video.
I’ve just been looking at building an active DC load device myself - CC, CW, CR, with voltage sensing and transients - albeit limited to around 150w. It’s going to cost me as much as this Kunkin device would! And it’s nice to see how it works. Man, this is not a cheap hobby. I’ve got that plan running alongside a plan to build a power supply: it almost seems that you want the one, to build the other.
Here in the UK, it seems like the English celebrate St. Patrick’s day as much as the Irish! Well, maybe not as much, but weirdly there’s very little celebrating of St. George’s day, who is the patron saint of England. Enjoy your party!
I’d be very interested in seeing your plans for the active load. You are right, it is not inexpensive hobby! But it has gotten to be better;)
St Patties day gets a toast here in Utah;). Thanks for chipping in!
I'd like to say it was my plan but that would be taking on undeserved glory! www.scullcom.uk/category/projects/dc-load/ It does look pretty good though - component list I have so far is around £220 so I don't know really - for that price I could get a good quality used one, or a cheaper Chinese one from banggood or alibaba,but I do worry about the quality of stuff from these sights - did you take a look inside your Kunkin? Part of why I'm looking at this is for the experience of building/testing/analysing my own, plus the fun of course and there are a couple of things I'd like to change - the interface for example (yet more money :) ). @@KissAnalog
That’s a great project idea! Let me know how it goes. If you don’t mind, maybe I can make a video on building an active load?
Definitely, and I'd follow along. Scully's looks good, he finished it (with a case) and I've got the PCB in my basket with JLCPCB, but it's expensive so I'm still a little unsure. I'm practicing my SMD soldering, and designing in KiCad to produce my own Power Supply PCB which I'm getting closer to. The only thing I'd say is "Please don't abandon it half-way through", it's really disappointing when the project gets so far and then goes quiet! If you do, I'd pull it together as you go, so you get some 'beginner's feedback', alongside my power supply which I'm working on.@@KissAnalog
Andrew Johnson Thanks - I checked out scullcom, he sure has had an interesting career. Too bad I’m not doing this full time, there are so many projects! Thanks for the support!
Haha Eddie, I was totally laughing at :30 in lol. As I was sitting here watching i kept thinking " I don't know whats making my mouth water more, that gorgeous GW Instek scope or the Kunkin electronic load " I came to the conclusion its a combination of them both lol. Another very informative video , keep up the great work brother!!
abusiveben LMAO I appreciate the support!!!
As always a really great video and you are again wary good at framing so it is wary clear what is going on.
I do also like that even that you own a top shelf Kikusui, you still take your time to demonstrate a unit that non experts are more likely to have or buy. :-)
Thank you - I appreciate the support!! Yes, I do want to use equipment that can be purchased today - and not just the equipment that one might need to acquire by luck finding a great price used.
@@KissAnalog Thanks, oh forgot about your question to all:-)
In Denmark this is not a known saint at all and we do therefore not make anything out of it, it's a normal, run of the mill day. :-)
Thanks - it’s great to learn about our world;)
I love the outfit! I think it’s cool to do different unique/weird things in some videos.
LOL! I gotta dress up once in awhile;)
Hi Eddie, do you know if it is possible to daisy chain two of the loads to get 800W?
Thanks for the great question! Yes they should work in parallel where each will pull the load it is set for,
Hi Eddie, good video.
Is the active load any good in constant resistance mode as load for amplifier output, or is it for DC only ?
Adam
Sadly it is for DC only
Im starting to look for electronic load. I love the functionality of this load, but like the price better of the MakerHawk. Anything new I should consider? BTW, its interesting to watch the evolution of your bench over the years. Thanks for all the information you share!
Hello Eddie. In the Netherlands we don’t celebrate Saint Patricks’s Day either. Though quite a few people are aware of it through popular culture influences (through movies and such). We are likely missing out on a couple of things, however we just had ‘Carnaval’ here, so now we are even? ;)
Seeing you in that ornate shirt (lol) I started to wonder if you were American or Canadian? I was assuming American, but afaik the Canadians also seem to embrace Saint Patricks’s Day. Any Irish blood in there and is that a factor for celebrating?
Good video btw. I recently purchased a different electronic load, a Rigol DL3021 that now lives rack mounted right beside a Rigol DP832 PSU. I don’t use a load often, but they are very convenient to have. However, for the less fortunate, maybe you could demonstrate (and compare) cheap alternatives (like power resistors and alike)?
Skull HQX Thanks for that - where does Carnaval come from? Is this a great time to visit the Netherland?
I’m an American here in the state of Utah. We like celebrating at any excuse;) I’m from Finish descent, mostly, but I there’s a bit of Irish in there.
I like that idea, I’m trying to keep in mind the more affordable methods. Thank you for your input!!
Can you test 18650 battery and make a short video? I'm looking for inexpensive Programmable DC Electronic Load Battery Capacity Tester - like this one. Thanks again for your video! Love your shirt!
Thanks for the great idea! I’ll give it a try.
@@KissAnalog Thanks!
I have a question for you, that I hope you find interesting. :-)
You have the Keithley 2015 thd multimeter that is great at measuring thd, but do there exists newer / other pieces of gear that can measure thd, what do manufactures use?
That’s a great question! I actually have a very nice THD meter, but it is in storage. However, I’m very interested in a method using the FFT function on my oscilloscope! I’ll have to do a quick video;)
Hello, I bought the kunkin KP184, only it was delivered without software for the PC. Where can I get the software? hope you have a good advice for me :)
Giovanni Seccabiani I’ll let you know if I get a response. I’m asking for it. There is a link on Amazon where you can ask and the vendor is supposed to get in contact. I’m still waiting...
@@KissAnalog Many Thanks. I wrote to the seller on amazon and also directly at kunkin. wait for an answer.
because you were doing a review, you would have more info. looking forward to answer if you know more
I still have had no response to my requests...:(
hi, I did it and got the software.
she is absolutely shit. nothing is translated, it just crashes and you get to kp184 no connection.
I have given everything back now.
I'll have to buy something decent.
If you want I can send you the software, write me a personal message for the email address.
I still have not recieved even a reply. I have lost confidence in this load,so I will do an updated video on the issues I’ve had. I’d still like the software Incase someone else asks for it. KissAnalog@gmail.com
This is a great demonstration thinks Eddie
Thank you - I appreciate you!
Can you try to review the kunkin kl283?
I’ll review this one again - and explain why I’m not thrilled. Also I want to see if I can make an improvement.
@@KissAnalog Thanks
Hi Eddi, did anyone understand the multimachine mode? it should be possible to sync more than one load via master / slave operation.
i have 2 loads and was not able to sync them via the RS485 wire on the back?
Does Anyone have an idea?
I’ll have to look into it - it is still a bit new to me;)
Thank you for the review. Have you been able to get hold of the software?
You’re welcome and thank you for watching. Not yet but I’m still working on it;)
@@KissAnalog Hi Kiss, any luck with getting the software? I'm trying to find it as well but so far no luck. Please let me know, cheers!
No luck, but then I kind of let it fall on the back burner. I’ll have to give it another go...
@@KissAnalog oh, ok. I'll keep looking as well and let you know if I find it. Cheers!
Martin Cervantes It’s crazy that it isn’t easier to find.
Hi Kriss,
I also bought KP184 in February this year. The main purpose was to investigate DCDC converters and other PSUs. I tested this load with car battery + tektronix 350MHZ digital scope + (AC + DC) 50MHz tektronix current probe + two digial tektronix 6.5 digits table top multimeters. I can say this load have pros and cons.
Pros: average current accuracy is within 1%.
CONS: Lets configure this load to 200mA CC and you will see ripple at level 270mApeak-peak. This ripple comes from poorly layouted power supply and grounding. The period of oscillations is in range up to 100Hz. I opened cover and replaced power supply with laboratory multi-voltage DC power supply. It lowered ripple about 10 times! Voltage rectification is done close to main current sensing amplifier and high resolution ADC. The same situation with LED display connection - close to ADC. Layout is 2 layers but mechanically a little bit complicated to disassemble. I think reverse engineering of this part could help to cut ground traces properly and connect ground in star topology could help. I tried to contact manufacturer but each email I sent to them echoed from Chinese firewall.
If someone would be interested I have test report which I wanted to share with manufacturer to help me solve this issue in fast way.
Kindly Regards
Szymon K.
Great info!!! I’m just starting to use this Kunkin, but I have noticed the high ripple. With your test, I think I can improve the design - that should make a great video! If you have any further info - I’d be happy to look at it.
Yes, I am also assuming that it can be fixed but still looking for contact with manufacturer. Actually I don't have enough free time which I could devote to playing with this. We paid for properly working deivice so they should help us, even sharing 1/4 of front side upper PCB gerber files could be in help.
Szymon Kielka I agree - they should be much more responsive! I still have not received the software... I’ll do a follow up video to show the short comings and possible solutions for those that like to tinker.
There seems to be a fix for the ripple problem. Philippe Demerliac: th-cam.com/video/NKwUACkCcFs/w-d-xo.html
Quote Philippe Demerliac:
Hello, the solution is to remove the capacitor juste bellow R10, the one that were my brucelles is at th-cam.com/video/NKwUACkCcFs/w-d-xo.html?t=1157 It works very well, the ripple is really reduced.
@@Sebastian_NE555 Thank you so much! Somehow I didn't get a notice for your comment. I'm going to have to try this. Thanks again!!
Love the shirt! Happy St. Patrick’s Say!!
Thank you!!
I received on yesterday, nice unit, testde a new RD6006W power supply which i also assembled together and tested it with the KP184, had fun with it, the fan on my kp184 is al little noisy , i opened up the case but al seems to be build in good order, so it must be the fan layering i think.
That's great! I don't think my fan is noisy - I'll have to pay more attention - maybe I've gotten used to it. There is a mod for the KP184, so I'll make a video about it.