Gordon W | 26/05/2014 10:42:28 |
2011 forum posts | Original post by Martin Perman "Gentlemen, I want to put power feed on both my Centec 2A Horizontal milling machine and my mill drill, I intend using an ex wiper motor on both. Can somebody point me in the direction of drawings so that I can build a mains supplied power supply with a speed control. Thanks, Martin P"
Yes please, and if at all possible without strings of initials. Letters and numbers to identify parts to be ordered will of course be useful. Sorry if I'm hijackig your thread Martin. Edited By JasonB on 26/05/2014 16:10:03 |
Bob Brown 1 | 26/05/2014 11:09:56 |
![]() 1022 forum posts 127 photos | Simple pulse width modulation (PWM) controllers are probably cheaper to buy already built, then just add a 12v power supply. |
martin perman | 26/05/2014 12:06:13 |
![]() 2095 forum posts 75 photos | Bob,
Thanks for that, I have just had a quick look and you can get a 10A unit for £10.00 or less, its not worth the effort of making one, power supplies are cheap enough as well.
Martin P |
Les Jones 1 | 26/05/2014 12:16:47 |
2292 forum posts 159 photos | Hi Martin, Les. |
martin perman | 26/05/2014 12:43:33 |
![]() 2095 forum posts 75 photos | Les,
Thanks for that as well, I had worked out stop, start, fwd and rev as I'm a mechancal engineer with electrical abilities it was just the speed control that without help is slightly out of my reach, but as I often tell apprentices it could only go bang once
Martin P |
Bob Brown 1 | 26/05/2014 12:49:03 |
![]() 1022 forum posts 127 photos | "it could only go bang once " As written in engine manual of Japanese origin translated to English, "press button marked start till engine explodes" |
Gordon W | 26/05/2014 14:39:12 |
2011 forum posts | I've just been looking at the net, and speed controllers are cheap, but not so the power supply, guess that's down to the transformer, it seems the way to go. Takes the fun out of it tho'. |
martin perman | 26/05/2014 15:58:14 |
![]() 2095 forum posts 75 photos | Gentlemen,
I've just notice my original post has gone,can somebody tell me why and how please, I know that in the title all the letters were there but not necessarily in the right order but couldn't find how to correct it. Martin P
|
JasonB | 26/05/2014 16:02:45 |
![]() 25215 forum posts 3105 photos 1 articles | This is the same thread but I corrected the title. Only Moderators can edit these things.
Though I have just noticed your original post has gone AWOL some time after I corrected the title? Have managed to find the text but had to put it in Gordons post. Best I can do. J Edited By JasonB on 26/05/2014 16:04:32 Edited By JasonB on 26/05/2014 16:10:49 |
martin perman | 26/05/2014 16:35:35 |
![]() 2095 forum posts 75 photos | I was only curious,
Martin P |
Neil Wyatt | 26/05/2014 20:42:07 |
![]() 19226 forum posts 749 photos 86 articles | Managed to completely confuse me, has no-one any idea where that post went? I've seen a few examples of duplicate postings over the last couple of weeks, but not disappearing ones. Neil |
JasonB | 26/05/2014 20:59:03 |
![]() 25215 forum posts 3105 photos 1 articles | Only thing I can think of is that another mod tried to edit the original post in the admin area ( it was reported to ask for the spelling to be corrected in the title) any editing in the admin area can loose the post. I have talked to Katie about this before but don't know if it was sorted. I acted on the report and altered it via the edit tab at the top of the thread so could not have been that. Then deleted the report as it had been dealt with, the report has gone so it must have been that I deleted and not the opening post. Luckily I had ME open in a few tabs and was able to go back and find Martin's post which I copied and pasted into Gorden's post as thats the only way to keep cronological order. J |
Oompa Lumpa | 27/05/2014 04:50:21 |
888 forum posts 36 photos | How about the power upply from an old computer? At least regulated and smoothed. graham. |
Gordon W | 27/05/2014 09:44:03 |
2011 forum posts | Hello Martin, I feel guilty now , not that I had anything to do with your post getting lost. I have found a biggish transformer with 24V output, wire is about 1mm thick so should be ok for a few amps. I would like voltage control with meter etc. All the circuits I've found on the web seem over complex, can we still buy a full wave rectifier and variable resisters? Or is it cheaper to buy the integrated circuit stuff? I will buy a completed speed controller, no point in trying to make one. |
Ian S C | 28/05/2014 15:23:06 |
![]() 7468 forum posts 230 photos | The transformer that I use for my power supply comes from an old Zerox copier, it's about 6"cube, I found it was an auto transformer, so I wound another layer to give an isolated supply at 18 volts, I used double winding of either 18 or 20 SWG wire (can't remember). Ian S C |
mechman48 | 17/06/2014 12:27:05 |
![]() 2947 forum posts 468 photos | Help ! I am looking to fit a power feed to my WM 16 table, I have a 12v wiper motor, a Potentiometer for speed control & a DTDP switch for Fwd -Off- rev but am looking to fit a 240v AC - 12v DC transformer for the supply as I don't have a battery charger (pinched when low life got into my garage) I would prefer to have a 'wall wart type.. simply plug into 13 amp socket connect to DTDP & away it goes..so to speak..am I on the right track & what type of transformer (Wall wart) would be suitable? I am assuming that I could remove the round pin connector from a cheap wall wart & connect to the DTDP... or maybe Maplins have a connector.. if you get my drift I have looked on e bay & there are hundreds to pick from... confusing.. I looked particularly at .. is this feasible/suitable considering it says it is a LED driver? I don't know what amps the motor will draw when connected to the leadscrew as am in the dark as far as electrics / electronics goes., I want to K.I.S.S. in assembly & not looking for 'spaghetti junction' set up. I'm sure that some of you Electronic whizz kids could help. TIA George |
Les Jones 1 | 17/06/2014 12:48:59 |
2292 forum posts 159 photos | Hi George, Les. |
John McNamara | 17/06/2014 13:58:58 |
![]() 1377 forum posts 133 photos | I believe computer power supplies can provide +12 volts at a lot more than 5 amps (But not at the -12 volt output also provided) There is a lot of information on the net Regards |
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