Replies to Minipulse Plus

[josewashere]

I though of jumping pin 5 on U6 to the nc pin 7 on U7 then using a machine pin socket
to plug into U7 where you can get all signals. I also have thought of using this circuit
on Hammer head and DeltaPulse so a small run of boards might be in the cards. Unfortunately
the chips are layed out a bit differently on those boards so I have to analyze the situation
a bit before building

The add on board would be here in yellow

[ATTACH]31164[/ATTACH]

Sounds great!

[6666]

SD you keep changing the designations of the components the resistor 42 I was talking about was from post 501, then its changed designation to R44 in post 511, now its R7 in post 512.

[Silver Dollar]

I though of jumping pin 5 on U6 to the nc pin 7 on U7 then using a machine pin socket
to plug into U7 where you can get all signals. I also have thought of using this circuit
on Hammer head and DeltaPulse so a small run of boards might be in the cards. Unfortunately
the chips are layed out a bit differently on those boards so I have to analyze the situation
a bit before building.

The add on board would be here in yellow

[maikl]

Thank you Silver Dollar for what you shared with us your great work... best regards!

[Davor]

Ok I fixed it. Here's a picture and the ExpressSCH file

That's more like it. Thanks!

BTW, 1N914 and 1N4148 are basically a same thing, only 1N914 are produced with somewhat tighter tolerances. In the GB part there is no specific need for 1N914, and whoever will make a BOM may simply turn all 1N914 to 1N4148 to make things simpler.

[josewashere]

Minipulse Plus REV-C

Thanks Qiaozhi I wanted one that used the same layout as the GB one by silver dollar as I wanted to see what the GB changes were. Would be good to make the changes on a small pcb that just plugged into the existing ic sockets. Now I want to have a good look at both diagrams to see if its possible.

[josewashere]

Here's a picture with both circuits on it;
[ATTACH]31152[/ATTACH]

Thanks that's what I wanted! Great work!

[Silver Dollar]

Here's a picture with both circuits on it;

[Silver Dollar]

Here's the picture and SCH for ExpressSCH for the original by Ivonic;


Oops I edited the schematic at work and posted it but didn't bring it home
so reedited it at home and so now some of the designators are different...

Here's where R42 is that Davor was talking about. You need a min value for the
pot;

[WM6]

R42 needs some resistance in series, say 6k8, to prevent overload.

You mean R41 from SD schematic?

[Qiaozhi]

Do you know were I can find the unmodified ver C circuit diagram for the MMP. I want to do a side by side comparison with your GB version diagram.

Minipulse Plus REV-C

[6666]

Yes John there are a couple of programs that use the .sch extension

[johnandles]

http://www.expresspcb.com/expresspcb...c_software.htm

Thanks 6666, same sch. different prog...
Thanks

[josewashere]

Do you know were I can find the unmodified ver C circuit diagram for the MMP. I want to do a side by side comparison with your GB version diagram.

[6666]

http://www.expresspcb.com/expresspcbhtm/Free_schematic_software.htm