Help finding Leprohon ICD2 Clone details

[Azaruk]

Hi.
I was given a schematic to develop a pcb for a friend of mine. The drawing name is ICD2.sch, by S. Leprohon, and is titled ICD2 Clone - RS232 Version.

The schematic was a PDF file.

I need more info about this design, but have searched the forums for what seems like hours with no success.

Does anyone know about this design (06/07/2005) and point me to the site from which it originated?

Thanks

 

[blueroomelectronics]

I've got a schematic for an RS232 ICD2 clone in my Inchworm assembly manual. Just go to my site and download it.

 

[Azaruk]

Inchworm Schematic

Thank you. A very generous gesture on your part to release the schematic.

I notice that you use a MAX232 with 10mfd caps. The data sheet shows 1mfd. I assume, as you have a successful market for your product, that the use of 10mfd is functional.

I will construct my own PCB for this project as the currency exchange rate from this country (South AFrica) make the purchase of your kit much too expensive for me.

Thanks again for your generosity.

 

[Nigel Goodwin]

I notice that you use a MAX232 with 10mfd caps. The data sheet shows 1mfd. I assume, as you have a successful market for your product, that the use of 10mfd is functional.

Different datasheets suggest different values, it's not at all critical - and as it's a simple charge pump, larger capacitors are probably better.

 

[blueroomelectronics]

Nigels right, not critical.