Author Topic: 9V Electric Mistress retrofit with MN3007 (Read 188141 times)

DLC86 · « **Reply #140 on:** October 04, 2010, 06:58:15 PM »

Quote from: jorge r on October 04, 2010, 03:16:46 PM

Hi
I 've exchanged pins 1 & 5 in the layout. Is that enought?
If someone wants to try...

http://www.4shared.com/document/ZahcEM1H/EM_3207_test.html

IT IS NOT TESTED!!!

No, it's not enough, but it won't be that hard to complete the job
Just compare these two layouts and you'll see the differences, the first is the mn3007 retrofit and the second is the mn3207 one.
http://thmq.mysteria.cz/em3007/PCB_v0_1_layout_1200DPI.png
http://img135.imageshack.us/i/sad1024retrofitmn3207lo.jpg/

jorge r · « **Reply #141 on:** October 04, 2010, 08:29:51 PM »

DLC86

I can't open the 3207 image!

DLC86 · « **Reply #142 on:** October 05, 2010, 04:12:51 AM »

It's working for me... BTW, try this other link:
http://it.tinypic.com/view.php?pic=169oo45&s=7
If it doesn't work please explain me how to attach images here

jorge r · « **Reply #143 on:** October 05, 2010, 09:04:15 AM »

I can't see the image yet.
But like JRM said, in the schematic at page 3, there are a lot of changes, like suply filtering.
Looks like I need change parts in the main board too, and not only the daughter board .

DLC86 · « **Reply #144 on:** October 05, 2010, 01:14:32 PM »

I'm sorry but I think the problem is in your browser because I can see them both with my computers.
However i paste the suggestion I received from thomeeque when I was building the 3207 version (which is working very fine for 5 months

).

Quote from: Thomeeque on March 31, 2010, 09:14:37 AM

switch R9 & R10 values and pins 1 & 5 of IC2 and hook R11 to V_CC instead of GND and you're there, at least theoretically..

R9 & R10 are 14k & 1k. R11 is 47k

I didn't check the schematic, I followed this layout for the main board which has several changes compared to the original schematic, I don't know if they're right for mn3207, maybe thomeeque can give you clearer answers
http://www.aronnelson.com/gallery/main.php/v/Just1More/layouts/Electric+Mistress+MN3007+Layout+v0-4.png.html?g2_imageViewsIndex=1

BTW, in the next weeks I'm going to build the 3007 version and I'll let you know if I can hear or see any difference between the twos
Bye

EDIT: reading the posts on page 3 and the schematic i can assume the changes made in the main board are for both versions, not only mn3207 one, they're thomeeque mods to improve the circuit. In the top-left corner of the schematic you'll see what these mods do. To just swap the 3007 with the 3207 you just have to see the components in blue box in the schem, aka see what I wrote above. I think now everything should be clearer

jorge r · « **Reply #145 on:** October 05, 2010, 08:45:58 PM »

Here is the layout, so. I think it's OK now.
Thanks for help DLC86 !!

Not tested yet. If someone wanna try, please post the report.

http://www.4shared.com/document/cY9BWoBM/Mistress_MN3207.html

DLC86 · « **Reply #146 on:** October 06, 2010, 05:08:11 AM »

Quote from: jorge r on October 05, 2010, 08:45:58 PM

Here is the layout, so. I think it's OK now.
Thanks for help DLC86 !!

Not tested yet. If someone wanna try, please post the report.

http://www.4shared.com/document/cY9BWoBM/Mistress_MN3207.html

I think it's ok too, well done!

JRM · « **Reply #147 on:** October 06, 2010, 06:27:20 AM »

OK! Now it's crystal clear! Thanks's Jorge for your work. One should mark that it's the MN3207 retrofit WITHOUT the mods of unity gain, the one called "Vref covers the BBD bias" (I haven't studied what that means yet) and additional filtering for LFO.

Allow me to thank Jorge in our common language:

Um grande obrigado deste lado de cá do Atlântico.

DLC86 · « **Reply #148 on:** October 06, 2010, 08:15:54 AM »

Quote from: JRM on October 06, 2010, 06:27:20 AM

OK! Now it's crystal clear! Thanks's Jorge for your work. One should mark that it's the MN3207 retrofit WITHOUT the mods of unity gain, the one called "Vref covers the BBD bias" (I haven't studied what that means yet) and additional filtering for LFO.

Allow me to thank Jorge in our common language:

Um grande obrigado deste lado de cá do Atlântico.

The unity gain mod is useless in this layout because of the output boost stage. But maybe he can add these mods in the prevoius layout...

jorge r · « **Reply #149 on:** October 06, 2010, 08:24:23 AM »

Another one? Is there any other topic with so many layouts?

Remambering that if you don't want the booster stage, just don't instal its parts (red ones) and use the "OUT 1" !

Um abraço JRM!

JRM · « **Reply #150 on:** October 06, 2010, 08:52:08 AM »

I think it's better to keep it as close to the original as possible, without any mods except from the retrofit.

DLC86 · « **Reply #151 on:** October 06, 2010, 08:58:34 AM »

Quote from: jorge r on October 06, 2010, 08:24:23 AM

Another one? Is there any other topic with so many layouts?
Remambering that if you don't want the booster stage, just don't instal its parts (red ones) and use the "OUT 1" !

Um abraço JRM!

I was joking,

I think we're ok for now.

Quote from: JRM on October 06, 2010, 08:52:08 AM

I think it's better to keep it as close to the original as possible, without any mods except from the retrofit.

I agree, but maybe with those mods and without the booster a smaller layout could be drawn... but we must send jorge some money for his work!

gefi · « **Reply #152 on:** October 06, 2010, 09:07:38 AM »

Quote from: jorge r on May 09, 2010, 06:08:45 PM

Hello

I've made a new layout joining both Gaussmarkov’s layout and daughter-board by Tomas (Tomeeque).
It's already tested and working. I Used the mods suggested by Dave W.(oldschoolanalog).
Schematics later (I'm lazy now )

http://www.4shared.com/document/wPcCxA3H/Mistress_9v_MN3007.html

I hope you like it !

Hello
This verified the PCB?, it works correctly?
thanks in advance

jorge r · « **Reply #153 on:** October 06, 2010, 10:06:30 AM »

gefi

The layouts with MN3007 were tested several times and are working.

... but we must send jorge some money for his work!

HAHA ! no way, I'm just having fun!!!

gefi · « **Reply #154 on:** October 20, 2010, 07:11:32 AM »

Hello
I already assembling and working, now I have to adjust trimpots

Uploaded with ImageShack.us

Greetings

Thomeeque · « **Reply #155 on:** October 20, 2010, 09:34:03 AM »

JRM · « **Reply #156 on:** November 12, 2010, 12:32:10 PM »

Hi,
I'm redesigning the board of the MN3207 retrofit on Eagle in order to have only one board but without the output booster (I'd rather do the unity gain mod). All was going nicely till the point a difference showed up: On the last retrofit board I had, one should conect legs 2 and 5 of CD4013 to leg 7 of CD4049 and leg 1 of 4013 to leg 5 of 4049 but on the scheme drawn by Thomeeque I see it the other way around. Does this make any difference (sorry for my too poor knowledge)? If so, which one is correct?

JRM · « **Reply #157 on:** November 13, 2010, 07:32:07 AM »

Sorry folks! After reading again the datasheets I've understood that it's the same: all in/out of CD4049 are the same, it's just a logical operator

Scruffie · « **Reply #158 on:** November 13, 2010, 04:18:40 PM »

Quote from: jorge r on October 06, 2010, 10:06:30 AM

HAHA ! no way, I'm just having fun!!!

*Cough* http://www.diystompboxes.com/smfforum/index.php?topic=78741.0

And the award for the least subtle hint goes to...

JRM · « **Reply #159 on:** November 13, 2010, 10:30:17 PM »

Quote from: jorge r on October 06, 2010, 10:06:30 AM

HAHA ! no way, I'm just having fun!!!

Having fun? I lost 4 hours and my board is still a mess and with a lot of work to do! And I'm doing it with Eagle... Updating the schematic was OK but populating the board is a nightmare!

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Author Topic: 9V Electric Mistress retrofit with MN3007 (Read 188141 times)