Articles
Low-cost resistance transfer standard concept build
Author: Illya Tsemenko
Created: 05 February 2023 Experiment with very low cost resistance transfer for international comparison.

Calibration tests for Round 3 USA Cal Club
Author: Illya Tsemenko
Created: 17 November 2022 Calibration of the USA Cal Club 10V, 10 kΩ references and long-scale Keithley 2002 DMM

Pimping a Prema 5017 7.5-digit DMM or can we?
Author: Dipl.-Ing. André Bülau
Created: 30 May 2022 DMM Modification experiment with new Analog Devices ADR1399KHZ low-noise voltage reference

ESI Standard Capacitor teardown
Author: Illya Tsemenko
Created: 30 May 2022 Look inside of old ESI SC10 and SC1000 standard capacitors

Power supplies for voltage references, Part 1
Author: Dipl.-Ing. André Bülau
Created: 28 March 2022 Practical designs and theory behind high-isolation DC/DC power converters for metrology applications.

Teardown and tests of Hittite 10 MHz - 20 GHz signal source
Author: Illya Tsemenko
Created: 23 March 2022 Tests, teardown and applications for Hittite HMC-T2220 programmable RF source

LTZ1000CH voltage reference - A simplified version of Wavetek/Fluke 7000
Author: Dipl.-Ing. André Bülau
Created: 12 March 2022 Alternative design of solid-state LTZ1000 DC voltage standard, inspired by Wavetek 7000 reference circuit.

DIY 10kΩ reference resistor
Author: Dipl.-Ing. André Bülau
Created: 21 February 2022 Precision DIY 10000 Ohm resistance standard build with temperature compensation network.

Mounting D-shaped circular connectors on panels
Author: Illya Tsemenko
Created: 28 November 2021 Methods and hardware to make D-shaped holes for binding posts and similar connectors.

Peek inside 53-year old wston cell voltage standard
Author: Illya Tsemenko
Created: 19 September 2021 A quick teardown of Weston-cell based heated voltage standard from Guildline.

Nanovolt design challenge : Build your own open-source nanovolt-grade DCV meter…
Author: Illya Tsemenko
Created: 02 September 2021 Join the friendly contest challenge with your open-hardware nanovoltmeter project and a chance to get unique 10.00000 VDC xDevs.com QVR-A reference.

Guildline 6675A/6623 resistance bridge system and experiments
Author: Illya Tsemenko
Created: 16 August 2021 Review and experiments with ultra-precision direct-current comparator bridge.

LakeShore 370 AC Resistance bridge for cryogenics thermometry
Author: Illya Tsemenko
Created: 07 May 2021 Cryogenic applications AC resistance/thermometer teardown and review.

HP/Agilent 66** series system DC power supplies
Author: Illya Tsemenko
Created: 29 March 2021 Overview and benchmarks of 66**A series precision linear DC power supplies from HP and Agilent.

Large DIY environmental chamber for DMM/T&M gear testing
Author: Illya Tsemenko
Created: 21 February 2021 Low-cost precision thermal/environmental chamber design and build worklog.

Tale 2 : eBay LTZ1000A reference modules and caveats
Author: Illya Tsemenko
Created: 23 December 2020 Recent experience with buying two LTZ1000A-based modules from eBay.

Modification for Fluke 8508A DMM, DIY Option 001
Author: Illya Tsemenko
Created: 23 December 2020 Adding rear 5-way terminals to 8½-digit Fluke 8508A DMM for ratiometric and scanner functionality.

Fluke 510A AC standard, or how to calibrate HP/Agilent 34401A for ACV ranges
Author: TEKTRON
Created: 13 December 2020 Experiments for calibrating HP/Agilent 34401A for AC Voltage and Fluke 510A standard review/mods.

Modification for guarded current output in Fluke 5720A
Author: Illya Tsemenko
Created: 27 September 2020 Modification for additional guarded output capability in Fluke 5700A/5720A front panel inteface.

Fluke 742A resistance standards repairs and performance checks
Author: Illya Tsemenko
Created: 15 September 2020 Benchmarks and test results of various Fluke 742A resistance standards.

ESI SR1010, SR1030 and SR1050 series resistance ratio transfer standards
Author: Illya Tsemenko
Created: 06 September 2020 Benchmarks, teardowns and performance of ESI SR1010, SR1030 and SR1050 hammon dividers.

Acopian AC-DC Linear power supply
Author: Illya Tsemenko
Created: 01 August 2020 Review and tests of Acopian Gold series A24MT350 +24V 3.5A linear DC power supply

EIP/PhaseMatrix 578B Locking microwave counter
Author: Illya Tsemenko
Created: 01 August 2020 Review and tests of EIP / PhaseMatrix 578B 10Hz - 110 GHz counter with locking capability

High-current resistance and shunt measurements log
Author: Illya Tsemenko
Created: 08 July 2020 Comparison of various high-power resistance standards

1 2 >