Ricardo writes:
Are there was that a poor institution can save when buying parts? An electronic card for controlling a small refrigerated centrifuge is quite expensive just because it's a proprietary design! Come on...we just have paid US $3,500 for just one card. More than the cost of a complete computer!! It's a simple control card (PLC + memory + discrete R, C, L components, a couple of FET, diodes and transistors and three 16 leads chips on a 8"x3" board).
I don't believe that technology has to be so expensive... Are there other alternatives?
cheaper electronic control card
