Search found 1821 matches

by riba2233
Jun 12 2019 3:09am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

That's really good method of assembling the pack :thumb:
by riba2233
Jun 05 2019 1:35pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Welders still available, ready to ship right away! :thumb: I'm ready to buy a spot welder, I just need a little bit of convincing why this is a better option than a sunkko 709a? which would set me back around UK£150 (I'm based in the UK) also whether it's similar/higher/lower spec than the other on...
by riba2233
Jun 04 2019 2:51pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Welders still available, ready to ship right away! :thumb: I'm ready to buy a spot welder, I just need a little bit of convincing why this is a better option than a sunkko 709a? which would set me back around UK£150 (I'm based in the UK) also whether it's similar/higher/lower spec than the other on...
by riba2233
Jun 04 2019 1:58am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Welders still available, ready to ship right away! :thumb:
by riba2233
May 24 2019 4:08am
Forum: Battery Technology
Topic: DIY spot-welder, FET-switched, processor-timed adj. pulse
Replies: 611
Views: 57934

Re: DIY spot-welder, FET-switched, processor-timed adj. pulse

Both options should work fine, but bolting fets down is much more convenient, for installation and also for potential repairs. Also it's a lot less messy, and you're not stressing the fets with soldering.
by riba2233
May 23 2019 11:31am
Forum: Battery Technology
Topic: DIY spot-welder, FET-switched, processor-timed adj. pulse
Replies: 611
Views: 57934

Re: DIY spot-welder, FET-switched, processor-timed adj. pulse

Yeah, if you ask me the other option is better :)
by riba2233
May 23 2019 1:15am
Forum: Battery Technology
Topic: DIY spot-welder, FET-switched, processor-timed adj. pulse
Replies: 611
Views: 57934

Re: DIY spot-welder, FET-switched, processor-timed adj. pulse

Yes, they should be slightly better, but are more costly.
by riba2233
May 22 2019 7:13am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Hi guys, please see new update in first post, I have dropped prices by 20 USD for these few remaining welders! UPDATE 22 may 2019: Closing sale - 20 USD price drop for assembled and DIY kit! New prices: Standard kit - includes assembled welder, electrodes, and footswtich - 140 USD - in stock DIY kit...
by riba2233
May 05 2019 4:26am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Well, I use these:

https://www.verical.com/pd/infineon-tec ... bf-2016823

Please share if you do something like that lol :mrgreen:
by riba2233
May 03 2019 7:09am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

hello riba. is it possible to modify the welder to handle around 2 times the current for welding copper? perhaps using larger or more fets? Hi, I have never tried myself, but I guess it could be possible. Maybe stack two welders, and use one as a master providing the gate signal for slave FETs? BTW...
by riba2233
Apr 27 2019 6:22am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

pr0ton wrote:
Apr 25 2019 4:53am
Hi, I have interest in a DIY unit, do you have one available? You can PM me of course for the order processing, I hope I'm still in time cause they look really neat, being able to weld copper strips!
Hey, you have PM! :)
by riba2233
Apr 08 2019 11:14am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Hi every on I finished my first "big " battery pack 14s28p Near to 1600 spot welding. No bug no problem with my jpspotwelder But I need New copper tip can you say where I can found New one? Hi, thank you and I'm really glad you like it! Unfortunately I just went out of copper tips, but they are mad...
by riba2233
Mar 24 2019 4:08am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Hi everyone! I'm excited to tell you that I have the welders ready to order and ship again. However, I'm less excited to tell you that this batch which includes 15 assembled and 2 DIY kits will be the last one. It was a pleasure to have had you as a welder maker. Always kind and direct. I recently ...
by riba2233
Mar 23 2019 11:58am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

I'm moving to another project, which will hopefully turn into a full time deal for me. I will post the details once I have everything ready, and I think it will be interesting for a lot of you guys here. Hmmm BMS's :wink: Nope, I would never sell BMS's even if I was pretty confident that I've naile...
by riba2233
Mar 22 2019 12:57pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Hi everyone! I'm excited to tell you that I have the welders ready to order and ship again. However, I'm less excited to tell you that this batch which includes 15 assembled and 2 DIY kits will be the last one. I want to thank everyone who bought the welder, believed in me and my product, and of cou...
by riba2233
Jan 27 2019 1:51pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

My JP is certainly proving to be a worthwhile investment... this ~3.2Kwhr (252 cell) pack is already sold, and I have several more smaller packs planned for my new LMX once it arrives. :) Cheers Thanks, I 'm really glad to hear that! :) I have 3 welders. I bought the JP first. I was enticed by all ...
by riba2233
Jan 12 2019 1:49pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

48v is too much. 12v is about the maximum. Consider that on mine, I measured about 3,000A during the pulse at 12v. There has been some success using gigantic capacitors and a 12v supply. The average power is not that much so the caps can get recharged with a reasonably small 12v supply. Fletcher, H...
by riba2233
Dec 20 2018 1:19pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Right now I'm using two 6v 180Ah PB batteries in parallel, and I get perfect welds. But I'm moving my bench, and don't want to use those big batteries there. I think I'm going to see some capacitors? Any advise? Think about use 5v power supply. I personally don't have experience with capacitors, I ...
by riba2233
Dec 13 2018 4:08pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

I was thinking about use some server Power supply in parallel. Do you think they can handle? If not, what about use 48v as a DC source? I can get a lot of power supplys for free they are 48v 50A, 2400w... I can parallel them, bit not sure if 48v is too much. Whoa whoa whoa :mrgreen: pe_bkijv6f0 12V...
by riba2233
Dec 12 2018 2:03pm
Forum: Electric Aircraft
Topic: Farfles Electric Ultralight.
Replies: 196
Views: 24188

Re: Farfles Electric Ultralight.

OMG, congratulations man! I never had even a slightest bit of doubt in your success :bigthumb: :bigthumb:
by riba2233
Dec 12 2018 1:58pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Yeah, you need DC source.
by riba2233
Nov 20 2018 3:27pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

1. You can use standard 12V ac/dc adapter with 5.5/2.1 mm barrel connector (most common one), 500 mA is fine, maybe even less, but I haven' tried. It's polarity will be marked, it's standard negative outer, and inner pin is positive. There is a diode on the input so nothing will happen if you accid...
by riba2233
Mar 27 2018 12:21pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1223
Views: 162644

Re: JP spot welder

Whoa, that's really nice to hear! You are the only one from the DIYelectriccar forum that got the welder :)