Search found 758 matches

by 1024MAK
24 Jun 2015 18:52
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 194166

Re: Building a replacement MTX PSU

If you have a look at the pictures in this post (hint: it's the right hand terminal in the picture here) and the following ones, especially this set of pictures you can just make out very thin wires that go from the terminals to the neon. These are the output terminals. It does not normally matter w...
by 1024MAK
24 Jun 2015 18:32
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 194166

Re: Building a replacement MTX PSU

Is your switch an illuminated type?

Mark
by 1024MAK
23 Jun 2015 23:25
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 194166

Re: Building a replacement MTX PSU

5A fuseholder and LED inside the case: 5A fuseholder and LED inside the case 1.JPG Finished IEC mains connector - outside view: Finished IEC mains connector - outside view.JPG Okay, that's all the photos that I have from last year posted up. Rather silly of me, but the photos I took after these were...
by 1024MAK
23 Jun 2015 23:20
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 194166

Re: Building a replacement MTX PSU

Wiring up the transformer4.JPG
Wiring up the transformer4.JPG (282.63 KiB) Viewed 8339 times
Wiring up the transformer5.JPG
Wiring up the transformer5.JPG (311.98 KiB) Viewed 8339 times
Don't forget the earth connection:
Wiring up the transformer - earth connection.JPG
Wiring up the transformer - earth connection.JPG (97.4 KiB) Viewed 8339 times
by 1024MAK
23 Jun 2015 22:52
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 194166

Re: Building a replacement MTX PSU

Final wiring up of the mains connections and the wiring to the transformer:-
Wiring up the transformer.JPG
Wiring up the transformer.JPG (170.21 KiB) Viewed 8340 times
Wiring up the transformer2.JPG
Wiring up the transformer2.JPG (150.95 KiB) Viewed 8340 times
Wiring up the transformer3.JPG
Wiring up the transformer3.JPG (201.21 KiB) Viewed 8340 times
In the top right corner of this last photo, you can just see the cable tie over the heatshrink of the output cable...

Mark
by 1024MAK
23 Jun 2015 22:40
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 194166

Re: Building a replacement MTX PSU

Okay some external shots:
finished switch, LED and fuseholder.JPG
finished switch, LED and fuseholder.JPG (261.12 KiB) Viewed 8340 times
finished switch, LED and fuseholder 2.JPG
finished switch, LED and fuseholder 2.JPG (237.77 KiB) Viewed 8340 times
Mark
by 1024MAK
23 Jun 2015 22:38
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 194166

Re: Building a replacement MTX PSU

No. I try to do as much as possible outside the box, as a slight misjudgement when moving a hot soldering iron and you make a mess of either the insulation of a wire you are not working on, or the plastic of the box :twisted: It does mean you have to think through what you are doing first. Then visu...
by 1024MAK
23 Jun 2015 22:21
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 194166

Re: Building a replacement MTX PSU

Well, if you want any specific additional pictures (I still have a small number left that I have not yet processed and uploaded), or indeed help and advice, just say so ;)

Mark
by 1024MAK
23 Jun 2015 22:03
Forum: HARDWARE
Topic: Building a replacement MTX PSU
Replies: 166
Views: 194166

Re: Building a replacement MTX PSU

1 and 2 is 27.1 Ohms 3 and 6 is 32.5 Ohms Is that OK? Assuming you mean: 5 and 6 is 32.5 Ohms Yes :D . Because the wire for one winding is slightly longer than the other, there is normally a slight difference. Once you have wired up the wiring to the primary (input) of the transformer, measure the ...