Hi group. I have just finished functional testing of a breadboard version of my version 2 Mem8Plus board and was finally able to get some measurements of power supply current: The currents were measured with the computer running a monitor program, so they are typical. LED current is 0.70 Amps, and Logic current is 1.30 Amps. The board has 11 TIL311 displays and 13 discrete LEDs, along with 12 GALs, one EPROM, two RAM chips and 50 LSTTL chips (mostly bus buffers/drivers!). The previous version used two LM340T-5 regulators, one for the logic and one for the LEDs, but I think these will be inadequate now, at least for the logic. So I’m thinking of using the Pololu 5 V, 2.5A regulator that others are incorporating, or the LM323K (TO-3) with heatsink for the logic. Does anyone have KiCAD footprints for these two parts they would share? Or will I find them in the standard libraries? I am getting ready to upgrade my KiCAD version to the latest prior to updating the Mem8Plus V2 schematics, so I can utilize all the newest features. Bob Bell |