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It’s the holiday season – traditionally a time for reflection and being thankful for our blessings. Around element14, there are plenty of reasons to be thankful – a community of mostly like-minded professional engineers, mentors, hobbyists, tinkerers and enthusiasts backed by a multi-national electronics component distributor and services firm. In return, we are blessed with a lot of opportunities including design challenges, Project 14 and especially the coveted RoadTest progr ...
While the last section looked at MOSFETs, this final section will cover some of the results from my experiments on lighting technologies. The first section will look at the humble NE-2 neon indicator bulb and trying to build a nice I-V curve from actual data. The next section will explore the possibility of running conventional mains-powered light globes from high voltage DC – something that is not ordinarily done. I will also check out the transient performance of the 2450 – a set o ...
As one of the fortunate members to be selected to RoadTest the Keithley 2450 SMU, I delivered a review earlier this year with a significant caveat as a hardware issue stopped me from being able to perform some of the experiments I had initially planned. Following on from my series of follow-up posts comes this instalment which fittingly comes back full-circle to the experiment which led me to the discovery of the hardware issue in the first place.   Source-Measure Units, or SMUs for short, ...
Now that the Keithley 2450 SMU has passed its initiation and been “accepted” by my family of instruments, it’s time to look at various applications of the SMU. During my original RoadTest review, I had already looked at some basic I-V testing (with KickStart 2, I-V Tracer and TSP-Scripting) including diodes, LEDs, MOVs, neons and MOSFETs. After the RoadTest was delivered, I used the SMU for some I-V characterisation of an Epishine Light Energy Harvesting organic PV module and s ...
Now that I’ve had my 2450 SMU serviced, returning with a fresh calibration, the first thing I thought I’d do was to check the calibration of the 2450 SMU against my suite of instruments - or more accurately, check the calibration of my instruments against the 2450 SMU. As the SMU is a precision instrument with very tight programming and read-back accuracy specifications, it is capable of generating very precise voltages and currents. While you can’t “calibrate” inst ...
Things have been quite busy, so I haven’t had a chance to bring everyone an update on my Keithley 2450 RoadTest. Since I delivered the original review with caveats, I’ve completed two RoadTests (Omron 2JCIE-EV-AR01 Environmental Sensor and Vishay SiC461 Synchronous Buck EVB) while my day-to-day work has consumed virtually all of my thoughts. But since we’re coming up to the end-of-year shutdowns, I finally got a chance to get back to blogging.   When I left you with the l ...