Tweaks and mods for HP 3457A 6.5-digit DMM
Published: 31 December 2016 Various modifications and circuit improvements of HP 3457A 6½-digit system DMM
HP/Agilent/Keysight 3458A 8.5-digit DMM modifications and tweaks
Tale 1 : Little jumper, or sharks in voltage references world
Published: 12 October 2016 Custom precision voltage reference build for hobbyist use. Engineering fairy-tale.
Ultra-quiet LDO module design, based on Linear LT3042
Published: 31 August 2016 Design and evaluation of ultra-low linear regulator modules, using Linear LT3042 in DFN package.
Ratiometric resistance measurements
International SI volt transfer experiment
Published: 27 May 2016 Voltage transfer experiment, using LTZ1000A-module for stable +7 VDC transfer.
Repair and use of old 19" TFT LCD monitor
xDevs.com development mini-modules
DIY Calibration resistance box build
DIY PCI expander board for IRAM DRAM-based drives
Published: 17 March 2016 Quick and dirty DIY expander for PCI slots (power only) for Gigabyte IRAM PCI SSDs.
Design of low-noise power supply for DIY precision standard
Testing of Fluke 720A KVD resistors
LCD font generation with font examples
Published: 15 January 2016 Devices and microcontroller projects which have LCD often require bitmap fonts. Guide about making and using LCD fonts.
Using Raspberry Pi SPI in Python
Published: 24 November 2015 Quick example of setting up Raspberry Pi to work with SPI ports, using Python
HP 3458A GPIB remote control guide
Published: 09 November 2015 Article covering remote operation and programming examples for 8.5-digit HP 3458A multimeter
xDevs.com Neutron : Automated power supply test unit
Published: 17 August 2015 Article covering design, assembly and usage of our ATE unit for PC ATX power supplies.
Experiment to reducing noise of Keithley 2002 DMM ADC
Published: 09 August 2015 Noise test with various modifications for zero reference opamp on Keithley 2002 ADC
DMM noise measurement test project
Published: 05 August 2015 Test project of bench DMM noise levels evaluation, using DCV ranges and various NPLC settings.
How-to weld own Thermal K probe using common powersupply
Published: 25 July 2015 Simple tutorial for making K-type thermocouple probes from bare wire and high-current power supply
xDevs.com VARM - versatile dual-channel panel meter
Published: 23 July 2015 Simple, yet useful dual-channel voltmeter for panel/embedded used. Open-source/open-hardware project.
- Large DIY environmental chamber for DMM/T&M gear testing
- Tale 2 : eBay LTZ1000A reference modules and caveats
- Modification for Fluke 8508A DMM, DIY Option 001
- Fluke 510A AC standard, or how to calibrate HP/Agilent 34401A for ACV ranges
- Modification for guarded current output in Fluke 5720A
- Fluke 742A resistance standards