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jc2048

Programmable Load Build

Posted by jc2048 Aug 31, 2018
Introduction   This blog is to document my attempt to build Jan and Peter's load. I'm trying to catch up with Jan, who is currently way ahead of me, so I can start doing measurements.   Although I normally prepare blogs in full before posting them, this time, as an experiment, I'm going to do it differently and blog as I go along, with the blog gradually accumulating (accreting?) over time. It will be a bit rough-and-ready and unpolished, but perhaps give a better flavour of the p ...
i want to look at retro games as well as raspberry pi singles. I have no clue what frequency to buy. ...
Introduction This blog continues my series of comparing some insulation testers to the Keysight  U1461A that I have had issues with and the Megger  MIT420/2 that I carried a road test review out on for element 14 last year   Keysight U1461A meter fault blog   Megger Insulation Tester - Review   Chauvin Arnoux CA6526 Review   The next insulation tester on my list is from Flir. The IM75 is their only insulation tester, that they also classify as a multi-meter. I ...
Introduction One really useful use-case for a VNA is to characterise antennas. When radio transmitters operate, the signal travels with virtually no loss over a cable (often a coax cable) and then is radiated by an antenna. But some of the energy may be reflected back towards the transmitter, if there is an imperfect match. The VNA operates in a manner where it can simulate a transmitter, and observe how much of the signal is reflected back. This provides an indication of how well the antenna is ...
Peter, Jon and I are building a Programmable Electronic Load. In this post I use LabVIEW to automate the measurements on the load itself. I'm buitlding an automated test setup to characterise its behaviour The process tests the load for a range of voltages and currents, and measures some points of interest. The results are logged to a spreadsheet.   Characterising an instrument requires lots of measurements. You put it in many conditions and then measure the behaviour. This exercise ...
Peter, Jon and I are building a Programmable Electronic Load. In this series of blogs I'm building a LabVIEW library of reusable components   In this seventh article I introduce the first advanced block: Raw ADC control.   LabVIEW has a set of blocks to build flows with serial communication devices. Those blocks work well with our instrument. However, inspired by what many instruments do (in this case, the BK Precision 85xx series), I'm creating more abstract blocks.   This ...
Peter, Jon and I are building a Programmable Electronic Load. In this series of blogs I'm building a LabVIEW library of reusable components   In this sixth article I introduce the first advanced block: Raw DAC control.   LabVIEW has a set of blocks to build flows with serial communication devices. Those blocks work well with our instrument. However, inspired by what many instruments do (in this case, the BK Precision 85xx series), I'm creating more abstract blocks.   This b ...

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