SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-18T19:09:56-06:00SparkFun ElectronicsSembazuru on Enginursday: A PSoC-Based Digital Load BoxSembazuruurn:uuid:cedd254b-129e-3362-62f9-594babd1d8e72017-07-24T09:50:34-06:00<p>I have a quick request. Once you have the schematic and board finalized, please provide both the schematic and a board output as pdf files in the GitHub repository so they can be viewed on machines that don't have Eagle installed (and can't have Eagle installed because they are controlled by corporate IT). I don't know if it is necessary to have board fabrication plots in the PDF, but an overview representation much like what one sees on screen (dimensions on important features would be nice) when designing. Or if you have the appropriate 3D models, a 3D rendering of the board would be nice.</p>
gasstationwithoutpumps on Enginursday: A PSoC-Based Digital Load Boxgasstationwithoutpumpsurn:uuid:be045d68-fd89-41d8-686a-0ae9c39b0a692017-07-20T20:36:54-06:00<p>A load for testing power supplies is going to get hot somewhere—it's function is to dissipate a controlled amount of power. The linear solution here makes more sense than a switched solution, because a lot of power-supply testing is looking at how much ripple it produces and introducing more ripple from the adjustable load would hide that. Also, one might want to look at the power-supply response to step increases in current, which an inductive load is not capable of emulating.<p>That said, I don't see the attractiveness of the PSoC line of microcontrollers here—the analog circuitry is just being used to compensate for the inadequate resolution of the DAC and ADC. A KL26, such as in the Teensy LC board, would be a simpler solution.</p></p>
Customer #444314 on Enginursday: A PSoC-Based Digital Load BoxCustomer #444314urn:uuid:c5d5d4d0-2479-a6ed-66be-9c15bfb2c90d2017-07-20T11:11:44-06:00<p>If you are going to sink any appreciable amount of current, the FET is going to get very HOT. Perhaps a better solution would be running the FET in a PWM mode with an inductor to smooth out the current ripples.</p>