What is this? 15A Power module?

[ARMANDO]

No info available on the net! For this plug in component module. According to the label its made by PCM Power / Mate Corp., -Model # MM-15A, -SN 365796, - Prod. code 032839-01 And the input Values look like .... 10.5 -125V 50-400Hz








[MOD note: images edited]

 

[davenn]

strange, it gives no indication of output voltage

 

[73's de Edd]

Sir ARMANDO


I know for a fact,what you have yourself there, is a compact , all self contained, potted and shielded power supply module.

The input spec is 105—125VAC input.

I assume that you don’t have the complete system that this control board belongs to . . . . and just having this one PCB for tear down, salvaging for its parts., as well as the other 2 linear supplys on the PCB. .

Since you do have the board, a little research will be in order to get all if it’s hidden info.

You can see the separate pair of terminals that take the AC line input.

On the opposite side there is the + and – terminals of the 15VDC at ~ 120 ma output and a trim input to set ‘er rat on 15, if so needed.

What you need to do is measure on the big PCB between the now vacant negative terminal and trim pin soldering pads, to get that in circuit resistance that it was last set to.. You can also trace down to how that is acquired, of which I expect a trim pot remotely tied into that trim pin line.

Putting that resistance between the modues two pins mentioned, should get the unit putting out what it used to.

Tracking down the resistance path on board should also pinpoint that adjustment pots value. That way you could have the pot right at the modules pin with a 0.1 ufd ceramic bypass across it, also include a series resistor of about 10% of that trim pot value, to make a resistance stop.

That’s about it . . . . .

73’s de Edd

 

[ARMANDO]

Thank you 73's de Edd,

For the info and time to help. Love your name btw. 73 is my favorite # after 13.(my b-day)

thank you for the spec. correction. I cant really make out the (105) but it makes more sense now.

I do have the rest of the system. (photos attached). I acquired a nonworking but in very good shape 1980's Scanning Electron Microscope about a year ago. hence my previous post about the- big red block thing on my tables right consisting of 5 high power voltage doublers . but regrettably I did tear it down for parts for my various projects over the last year. Now I wish I hadn't done that!

I am now trying to piece it back together to better understand how the components were Assembled and ultimately dissect it and re-purpose these components to make a
-multi use, high currant, regulated, variable, multi out, bench supply.
Must include a 12v rail with at least 30Amps preferably more.

How did you get this info?

On the opposite side there is the + and – terminals of the 15VDC at ~ 120 ma output and a trim input to set ‘er rat on 15, if so needed.

The output voltage is what i was really after here, and the 120ma ? so in the model # MM15A. 15A doesn't imply 15 Amps? but as mentioned earlier, this is just a small part of the big picture.

I appreciate any help from the Electronics point community, As I love doing electronics but I have very little formal training mostly self taught consequently my electronics knowledge is limited.

So I'll post pics of some of the components i extracted from the microscope minus the fluke there in the middle
I'll explain more on them latter or as needed. with more details on my plan / schematics

 

[ARMANDO]

Here's what I've been able to figure out on this power supply. T hanks to the wiring harness even though
I did hack it up for use in other things, it has good memory (almost put itself back on) and lots of zip ties every where. so I was able to reroute most of the wiring and trace the connections from the transformer to the distribution/rectifier Board And on to the choke coils and filter caps.
I don't have much experience drawing schematics so bare with me if you will,
Here's what I got so far (not complete)

 

[ARMANDO]

actually I'm not sure if the transformer coils are isolated does anyone know what kind of transformer this is?
or how i can test it? there are no markings on it any where.but it is big and heavy! 7.5" x 8" x 6.25" there are 8 pins on the primary side 3 are connected together with another 3 that are connected together. that is how it was during operation. Now! on the secondary side there are 13 pins. Any ideas how to test these? So I'm sure of what i got here.

 

[ARMANDO]

Here's what I've been able to figure out on this power supply. T hanks to the wiring harness even though
I did hack it up for use in other things, it has good memory (almost put itself back on) and lots of zip ties every where. so I was able to reroute most of the wiring and trace the connections from the transformer to the distribution/rectifier Board And on to the choke coils and filter caps.
I don't have much experience drawing schematics so bare with me if you will,
Here's what I got so far (not complete)

 

[lbochtler]

If your still interested in restoring The Etec Autoscan microscope you have (its either a Autoscan or Autoprobe) I have a more or less full set of schematics for this machine (owning one myself) as well as knowledge about the subject matter etc...