Mike has brought to my attention the fact that I installed the diodes in the pedal daughter board incorrectly. Can a member here more knowledgable than myself explain how a diode works, and what the consequences are if installed backwards?
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Mike has brought to my attention the fact that I installed the diodes in the pedal daughter board incorrectly. Can a member here more knowledgable than myself explain how a diode works, and what the consequences are if installed backwards?
Adam,
It’s basically a one way valve for electricity.
Not to be insulting at all, but the concept is one of the very basics of electronics, it is how transistors, SCR’s and pretty much everything digital does what is does, it’s why we use silicon.
If you still have my number I’ll be more than happy to spend some time with you on the phone, and point you down the right path for more info.
Watch out though this stuff is addicting, gets you thinking about quantum physics and the like. It can turn you into a GEEK!! OMG.
To use my Radio Shack Science Fair knowledge of electronics, a diode is a gate that allows electricity to flow one way and not the other. See the little "arrow"? Thats the path it should flow if I remember right.
ASE,Quote:
Originally Posted by ASE_MasterTech
I have stated that when I have a FIRM date, I will release it. They are on the water and have been for some time. When I get a confirmed, final delivery date from the shipper I will put it up ASAP. And when they are in I will release it. I have gotten estimates, but we get dinged every time we give out "estimates", so we aren't releasing estimated dates. Typically we will receive a full and accurate and confirmed delivery date a week before it gets in. If there is NO news, then there is no need to create our own guesstimates, which we have done in the past and it always backfires. But if you want, then consider the estimate that Adam announced a good ballpark.
OK, so the diodes I have here don't have an arrow....but they do have two squiggly lines and a black band at one end. How do you interpret direction of flow from that?
I assumed the 17th as a ballpark delivery date. Since it's a week and half away, You should recieve a firmer shipment docking date confirmation sometime early next week if that date is close. If not, well, it is what it is.
The black band is the cathode. A diode will pass current in one direction, so if you match the black bands they will be in the right way.
I am curious then, Mike, the attatched pic shows the diodes with the black bands facing away from each other. Are you saying that they should be facing each other? How do they need to match?
That thumbnail did not come out right. See post #44 on page 5
In all fairness, I must state that Everlast had already agreed to some compensation in my order for the 'unusal' delay issue, which of course only comes to fruition upon delivery of the order.Quote:
Originally Posted by GWD
Perhaps this wasn't the proper area/thread to vent my grievance as it is more one of 'sales follow-thru' involving some notification process for overdue pre-paid customers &/or warranty claims.
I cannot comment 'first hand' on Everlast Tech support, but from all I have read they seem quite competent, courteous, & helpful. However, when my order does finally arrive, I am hopeful that I will not be requiring too much of their assistance..
\Quote:
Originally Posted by Adambomb
So the original question didn't really get answered.
A diode in a A/C (alternating current) circuit serves to allow either positive or negative current to flow depending upon the direction that it is installed.
For instanc if I make a "Y" connection and install a diode in one direction on one leg of the Y and another diode in the other direction on the other leg of the Y I have partially rectified the A/C current and produced one leg that is positive and another that is negative. The result will be a DC (Direct Current) circuit. This will produce pulsed DC since there will be a pause in current flow when either the - or + is not being passed. In order to produce a smoother current flow you would use 4 diodes in a full wave bridge rectifier configuration.
..........
Thank you for the explanation Steve. It is still a little over my head in that I don't understand the phases of power (1 phase vs. 3 phase)....I know (I think) in AC the current switches polarity at 60hz? I don't even know what the hertz means. Electronics were never my thing, I always had to keep asking what the difference was between volts and amps when I was a kid, and I still had a hard time grasping the concept. I'm just an electrical retard.
But I got it, a diode is a one way check valve.
Strange, there are still several posts missing from my thread? That's not even counting the ones that disappeared on purpose.... The webmasters update surely wreaked havoc on this site!
A little update, I received my replacement rear panel the other day, I just haven't had time to swap it out yet. I guess the wp20 torches aren't in yet? I'm on the waiting list if not!
Adam,
We are doing the best we can, all things considered. We will keep working on things.
Any missing thread will have to be re-created. The database was corrupted when we went from 3.6 to 4.0 vBulletin. Just re-upload or start another thread. AussieChris re-created his already.
As hosed up as this was I think we’re lucky we got back what we did.
Great job Mike.
I've been hesitant to post anything since the forum upgrade & data loss. I'm a software engineer and work with databases all the time. The #1 rule before you run any kind of upgrade script is to make a full backup of your database.
Getting back to welding & welders... I replaced that multiplexer chip and my 250EX is back to normal operation. Life is good. Now if I only knew how to weld! Ha.
I wasn't trying to imply that the mods were responsible for the data loss, I just saw a thread that everything was back to normal, and I was pointing out that there are many posts still missing from this thread. None of them were of any particular importance though, so no great loss.
I'm still curious about the WP20 torches. Did they come in with the last shipment?
Angular, did you still need some inside pics of my unit?
Adam,
The WP 20 torches are not from the factory, in fact non of the torches are. But the ones with the welders do come "through" the factory...Being a separate product, they are not shipped in the same shipments.
Gotcha Mark. So does Everlast have any WP20 torches, or are you still waiting for the next shipment?
Hey AdamQuote:
Originally Posted by Adambomb
Actually order with touches and consumables arrived
We should get it delivered to our warehouse sometime this week !
The new forum uses different views and foreign key's so the data doesn't come straight over, you have to run the conversion against the database to update the schema. Sounds like that's the part that was missed. Oh well, too late to run it now. LOL.. Been there done that....Quote:
Originally Posted by angular
Pretty close Sschefer,
The schema was updated ok , but the indexing was fubar, Mike did the work , but we don’t have direct access to the Db server so had to work through a supplied UI, turns out Mike ended up deleting all the indexes then rebuilding them all. I didn’t get a chance to poke at it (I hate DBA stuff anyway) but Mike worked his A$$ off on it. ,
If you get a chance... next time you have the cover off shoot me an e-mail (btp -> s16v.com) or call me (two five three 951-4712). There are three places inside my unit where components have been cut or are missing, so I'd like to compare.Quote:
Originally Posted by Adambomb
Diode V55 here on the main board up top:
http://s16v.com/photos/2011/01-29/P1...oken-diode.JPG
1K resistor (next to diode V79) on the main board up top, near the front:
http://s16v.com/photos/2011/01-29/P1...n-resistor.JPG
Capacitor C9 on vertical board mounted near front on left side (when looking at front panel):
http://s16v.com/photos/2011/01-29/P1...-capacitor.JPG
Thanks.
Bradley
Sorry for the delay Bradley, but I replaced my rear cover today and checked my unit against the pics you provided. In each of the three locations, I had the same modifications. My unit functions perfectly now, so if you still have any issues it is not because of these particular mods. ;)Attachment 1206Attachment 1207Attachment 1208
To illistrate how well the welder is working, here is 2 titanium coupons, .015" thick autogenously lap welded together. I'm looking forward to getting a back purge set up to do the welds properly.Attachment 1209 I'm also looking forward to getting some titanium tig rod and making a custom Ti battery box for my old Kaw :cool:
Adam... thank you very much! I got your voice message and really appreciate you taking the time to post the pictures. I definitely feel better knowing your 250EX is the same as mine.
You're welcome Bradley :cool: I hope you got your machine squared away and running right. I just refilled my argon tank for the first time. Considering the amount of actual welding time I have put in, the 248 cuft cylinder should have lasted quite a bit longer. It would seem that I had a small leak at the tank fitting, since anytime I turned the valve off the residual pressure would bleed off in 15 minutes. :confused: At first I thought I might have gotten one of the cracked regulators, but I could not find any evidence that there was anything wrong with it. Now that I have a new bottle, it holds pressure just fine. I think it was the bottle I had :cool:
YAY! My WP20 torch arrived today. I ripped it out of the package, and.....it's soooooo tiny! Here is the stocker next to the 20 torchAttachment 1223
OK guys, I ran into a small snag. When I went to assemble my new torch, I couldn't get the cup to thread onto the collet body. It seems there were not enough threads exposed past the insulator to even get the cup started on the collet body. This was with the collet body threaded on fully and seated in the torch head. Has anyone else had a similar circumstance with their everlast WP20 torch?
On top is the collet, gas lense and cup I just bought. On the bottom is the stock supplied parts. The gas lense and associated cup fits just fine, But the stock parts are a little iffy. I'm sure I must be doing something wrong, since I checked the stock collet body against one at the LWS, and they looked identical.Attachment 1224