IGSL

[eduardo1979]

IGSL TX-TGSL

Hello. In the previous pcb there is an error, thanks to Silver Dog has been noticed. Pin 5 of U1 was wired incorrectly. Now I think everything is ok. First of all, take a look at the TX circuit. Sorry for the inconvenience.

[eduardo1979]

igsl

GIF...

[Wiltran]

IGSL COIL

Anyone know if I could use .59 mm wire in the transmit coil instead of .55 mm?

[cnckecgo]

im confused, could not understand what schema is working properly ıvonick Waiting for your help, please add the link working bi IGSL please let him

[eduardo1979]

IGSL

Now everything is correct. No errors. Here are the two versions and TGSL .... Minelab.

[der_fisherman]

ISGL Parts list and schematic errors

Well done Guys, thats what we need at this time, team work.

I have been checking the parts list against the last posted schematic from Ivconic and the list and the schematic do not agree with each other, but I do remember that I believe Ivconic said that the schematic was not up to date, so this may not be a worry for us.

So I guess my questions to Ivconic are:- is the parts list correct? Do you have an updated schematic for us?

Once those questions are answered, several of us need to work though and post any further errors for Ivconic to look at....

Regards

Andy

[der_fisherman]

Now everything is correct. No errors. Here are the two versions and TGSL .... Minelab.

Did you have an updated schematic?

regards

Andy

[eduardo1979]

IGSL TX-TGSL Schematic

BMP Schematic

[der_fisherman]

Did you have an updated schematic?

regards

Andy

The new board is still too big, SilverDog told us that the board must fit into a 100 x 100 mm square for the best prices, the latest board is too large in the X direction.

Maybe someone who has a full version of the Abacom software should try and reduce it in size by trimming the X direction. There are plenty of resistors that could be stood up still.....

I would be surprised if the software does not allow a board size to be set.....

I feel that it really needs to be re-laid out to achieve the requirements of SilverDog and I would do it if I had the software......But I am an Eagle person, sorry.....

What is your feeling Guys? particularly SilverDog and Edouardo? What would be the price difference for a PCB, is it enough to worry about or not?

Regards
Andy

[der_fisherman]

Head up problems with schematic and parts list

BMP Schematic

The new schematic and the parts list are radically different to each other, I found 10 discrepancies in the caps alone just by looking at the top and top left hand corner of the schematic.

Please note:-

I DID NOT CHECK THE COMPLETE SCHEMATIC....nor did I check any other components than Caps, so 10 errors are probably not the complete picture.

SOMETHING IS WRONG GUYS!!

SilverDog cannot proceed at this time till the problems are resolved.

My guess is that someone has renumbered all the components in the schematic, but neglected to send us a copy.....

I hope its something simple and quickly fixable....but its a possible disaster.....

Regards

Andy

[eduardo1979]

Can you make the mistakes he has seen in practice? There are some 100nF capacitors not shown in the diagram, but the PCB itself. These capacitors Ivconic added them as in the TGSL and that's good. The capacitors had no bearing on anything, what they are doing is behaving as a voltage filter and the detector becomes more stable. I do not see errors. The picture I posted above is the schematic for the circuit corespondiente IGSL with TGSL TX.

[ivconic]

Ok, let's make it final.
In attachment i am giving both versions.
Those are last revisions made by Eduardo.
I agree with those and i am also thinking that those would be probably best to make. So, Silverdog; take those 2 versions and decide which one of those 2 you will make.
Or make both.
So, to void any further confusions; let's take now just those 2 as final versions: first one is suitable for TGS/TGSL coils and second one is suitable for Musketeer coils.
Your choice.
About schematic; Der Fisherman i am very sorry cose i didn't corrected and prepared final schematic yet. I will do that just righ now and post a bit later.
Yes... your observations make sense - but also Eduardo is right; usually i add few more components on pcb to preserve some spare space for eventual further experimenting.
But Eduardo is right about capacitors. Whenever cap is present to filter voltage - is better to have it than not to have it.
So.. give me half an hour and i will post also updated schematic too.
Best Regards!

[der_fisherman]

OK, I will list the failures I have seen, but I have not checked the complete PCB, I feel that with the type of failures I can see, there are serious problems of documemntation.

Examples only:-

Part Schematic Parts List
C4 103 220µF 16v Electrolytic
C3 10pF 220µF 16v Electrolytic
C5 0.22nF 220µF 16v Electrolytic
C14 0.22nF either 4.7µF Bipolar or 10µF Electrolytic
C16 103 22nF
C17 0.47nF either 4.7µF Bipolar or 10µF Electrolytic
C10 220µF 100pF
C42 104 Does not exist on parts list
C43 472 Does not exist on parts list

THIS LIST IS NOT COMPLETE. Format gets lost, so look at the attached text file for a formatted version.

I have only checked a small area of Caps only.....no other components have been checked......

I feel its pointless me checking further as with such drastic differences there must be another reason for the problems.

I checked using the BMP schematic that Edouardo posted today. It is seemingly identical to the one posted some days ago, no differences at least up to now and that was one that Ivconic said was incorrect!!!!

Maybe you sent the wrong schematic Edouardo? Can you check please?

regards

Andy

[ivconic]

Der Fisherman you confused first schematic (IGSL for TGS/TGSL coils) with second version (IGSL for Musketeer coils). Be patient for half an hour and you will have both versions completed.
By now i finished first version update, here it is:

[der_fisherman]

The changes I have noted are far more than what you describe, at least 4 caps on the schematic, are not in the parts list at all, some pF caps are suddenly µF electrolytics in the parts list, a gigantic leap in value.....

We do need to check carefully, and that's simply not possible at this time.

With regard to the two New PCBs, both versions, are the differences purely component changes or are they also Board changes?

By lining one above the other I could not detect any PCB differences (but I was using a bad method!)

My take is an out of date schematic.....but only Ivconic can be certain or not.

Due to the fact that the values are not in the data for the PCB, only the part, I cannot check better.

Also, some pads are in the wrong layer, they show up as yellow with the wiring and will not get etched on the PCB......fatal!!

Regards

Andy