Category: Test/Measurements

Adil Malik build his own injection transformer to test switchmode power supplies in his lab. He writes: Recently, I have been designing some SMPS and required some hardware to measure the actual loop response of the complete converters. People familiar with this area will probably know...

A basic open-source multi-GHz sampling oscilloscope for experimenters on a budget. Still a work-in-progress, with key pieces on separate PCBs, but showing bandwidths in the 7-8 GHz range with >= 100 GSa/s equivalent-time sampling, and around 500 k comparisons/second real time. by Ted...

After the release of his PIC32MZ EF based 20Msps oscilloscope with an integrated 1-inch by 1-inch OLED screen for readouts, Electrical Engineer, Mark Omo has again unveiled his new design, the self-contained 60MHz 250Msps Probe Scope oscilloscope with the probe in cable form factor. The...

Adil Malik made a low cost FFT LCR meter with an STM32 MCU: The approach I took was a mixed signal one where a capable analog front end would be paired up with a beefy DSP processor to compute the Impedance. Most importantly, in this scheme, the DSP is responsible for discriminating...

Original publication: Elektor magazine November 2016 Author: Kurt Schuster Free download expires: Friday 23 August, 2019. Suppose you want to measure a slowly-varying voltage from a sensor, or perhaps plot the discharge curve of a battery. Is it really necessary to sit there and note...

Author: Burkhard Kainka All that’s required to measure radiation is a simple PIN photodiode and a suitable preamplifier circuit. We present here an optimised preamplifier and a microcontroller-based counter. The microcontroller takes care of measuring time and pulse rate, displaying...

Our friends on open-electronics.org published a new project based on AS7265X spectrum sensors family. by Boris Landoni After this introduction we enter into the merits of the project, which consists in developing a PC spectrometer obtained by connecting to the USB port (which is now a...

Digital Caliper Computer Interface can be used to log data on a spreadsheet. Report by Jeremy S. Cook @ blog.hackster.io With a few pointers found here, he found that this data is transmitted in a continuous stream in 24 bits at 1.5 volts. He therefore level-shifted the 1.5V output to...