GOLDSCAN 5 SCHEMATIC QUESTION

[eclipse]

Yes , 2 diodes , it is half current in each, so it is more safe. And the voltage is also lower, because of the curve V/I of the diodes.
Let s try a SS22 , it is a schottky , half the voltage of silicium .

1n4148 has far less capacitance which you'd want for those diodes. Sticking to 2x or 3x configuration of 1n4148 is best.
I buy packs of x100 1N4149 (fairchild/on) from mouser which are rated 500mA / 4A continuous current.
After I started using those I've never had a deffective piece which happened all the time with cheaper alternatives if they are used on the edge of their specification, sometimes even 1/2 of that would make them pop.

[6666]

1N4149, Thanks have ordered some.

[Idefix]

Hi..
Looking more closely at the specs, you are right. SS20 is not the good choice.. 1N4148 is about some pf against some hundred pf..

[eclipse]

Here is a link of 1N4149. Use only reputable sources (Farnell, Mouser, Digikey, RS, etc.).
Those diodes are rigid as they can come. I'm on my ~300 diode of these (3rd bag of 100s - not even one failed diode - I don't even measure them like I used to, before soldering).

[Orbit]

Only the diode is missing, what are you blaming? Diodes are not critical !

[Altra]

If you guys want to make an accurate schematic. I suggest we do it in diptrace. That way a few of us can make the changes before making public a final version. I did my drawings in a old version Orcad capture and it's not easy to go back and renumber parts. If Jose can send me his GS5 diptrace file it will save me a lot of time. I don't want to post multiple corrected schematics like so many other threads on this forum.

For frontend diodes many people use BAV99's they are fast and have a low capacitance.

[Jose]

If you guys want to make an accurate schematic. I suggest we do it in diptrace. That way a few of us can make the changes before making public a final version. I did my drawings in a old version Orcad capture and it's not easy to go back and renumber parts. If Jose can send me his GS5 diptrace file it will save me a lot of time. I don't want to post multiple corrected schematics like so many other threads on this forum.

For frontend diodes many people use BAV99's they are fast and have a low capacitance.

Here are the files GS5 of the first part and the audio, in DipTrace format for those who want to modify them.
Josex2.rarGS45 3.rar

[Altra]

Jose, Thank you for the files. I'll try to make a new one for the TDi

[daverave]

the 1st amp NE5534 should be the AP version which is low noise type.

[Geo]

Here are the files GS5 of the first part and the audio, in DipTrace format for those who want to modify them.
Jose[ATTACH]41072[/ATTACH][ATTACH]41073[/ATTACH]

Can you post the file as jpg type because i can't open them???

Thank you.

[Toros]

I think that the Dip trace does not allow export in jpg format. The program has its free version and you can download it whenever you want.

[eclipse]

Okay as a DipTrace preacher I should export the files but really you should try the app. It's free under NNN pin schematics (main board is too large for this).

Goldscan 5 by Jose (main)

Goldscan 5 by Jose (PSU & Sound)

[6666]

For those people who are planning to update the schematic can you please put a date on the schematic and a name so we know which is the latest version
thanks.

[eclipse]

If you take a closer look on both files there is a note (date which can serve as version number), and I can't edit my previous post.

[Jose]

Can you post the file as jpg type because i can't open them???

Thank you.

Hello Geo
Thanks to Eclipse, you can see the files.
With regard to audio, I want to clarify that it is experimental, inspired by images taken from different forums, schemes published by Miscktv, the audio of Scope CS7, in addition to essay and error.
This version works with 12 volts, which is why it uses a negative low-drop regulator.
In some cases, the connectors must be taken as a connection point, because they do not match with the other board.
The purpose is to serve as a basis, to update it with the schemes published by Altra.
Jose