Articles
Servicing yet another old Fluke 732A 10V standard
Author: Ilya Tsemenko
Created: 23 October 2024 A short process of fixing and calibrating Fluke 732A standard with photographs and data

Keysight B2987B electrometer internals photos gallery
Author: Ilya Tsemenko
Created: 23 October 2024 Internal construction of the updated Keysight B2987B series electrometer/high-resistance meter.

Internal design of Analog Devices DS1230 NVRAMs (former MAXIM (former Dallas))
Author: Ilya Tsemenko
Created: 20 October 2024 Internal construction images of DS1230 and few other battery-backed SRAM modules for non-volatile memory storage.

Photo-report of IEEE 38th North New Jersey conference and mini-show
Author: Ilya Tsemenko
Created: 10 October 2024 xDevs.com visited mini-conference and mini-show held on October 9, 2024 in New Jersey, USA.

Once again replacing old tantalum capacitors in TME? Not necessary, people say?
Author: Ilya Tsemenko
Created: 05 October 2024 Lore on forums about replacing all and every tantalum/electrolytic caps on 20+ year old gear is silly and unnecessary? Think again.

A look on 32-channel power modules from Advantest SSD tester
Author: Ilya Tsemenko
Created: 20 September 2024 Review of two Advantest SSD DPS G8001-66570 and SSD DR DPS G8003-66520 boards

Photo review of the HP 3458A "Prototype-4" A1 DC board from 1983
Author: Ilya Tsemenko
Created: 14 September 2024 Hands-on photoreview of very early 1983 HP 3458A hardware - A1 DC board

Weekend project - dual-zener low-noise ADR1000 X9-D module
Author: Ilya Tsemenko
Created: 19 June 2024 What would happen if lower-noise reference installed in 3458A? A quick look on hardware design.

ADR1001 in the house, ready for experiments
Author: Ilya Tsemenko
Created: 29 May 2024 Newest integrated heated buried 6.6 V zener reference from Analog Devices is finally delivered

A quick look on Isotech MilliK thermometry readout
Author: Ilya Tsemenko
Created: 28 May 2024 Isotech MilliK thermometry readout for precision RTD/thermistor measurements.

TBP-3 low-thermal binding post
Author: Ilya Tsemenko
Created: 24 May 2024 Overview of the TBP-3 low thermal EMF binding posts for electrical metrology enthusiasts

Fluke 80F-15 high voltage probe teardown
Author: Ilya Tsemenko
Created: 21 April 2024 A quick look at construction of high voltage probe for 15kV measurements

VPG VHP-3 10 Omega resistance element teardown
Author: Ilya Tsemenko
Created: 16 April 2024 Teardown of the damaged 10 Ohm VHP-3 high power foil resistor in TO-3 case

Quick look at National Instruments PXI-1000 with modules
Author: Ilya Tsemenko
Created: 15 April 2024 Teardown and some PXI cards overview from PXI1000 embedded instrumentation chassis

High-resolution macro for HP3458A U180 ASIC
Author: Ilya Tsemenko
Created: 02 April 2024 Imaging 3458A's ADC ASIC hybrid with Zeiss Axioscope automated microscope

A quick look at Fluke 754 process calibrator performance
Author: Ilya Tsemenko
Created: 30 March 2024 A calibration test of hand-held Fluke 754 Documenting process calibrator for SignalPath

Datron 4902 - DC divider from Datron 4900 system
Author: Ilya Tsemenko
Created: 28 March 2024 A quick look inside passive precision 1kV DC-voltage divider from Datron, Model 4902

Tinsley 5648 oven enclosure for resistance standards
Author: Ilya Tsemenko
Created: 20 March 2024 A quick look inside of heated oven box for thermometry resistance standards, such as 5685A.

ESI cables for bridge system
Author: Ilya Tsemenko
Created: 20 February 2024 A brief look on historical ESI measurement bridge system cabling

Metal foil TO-99 resistor network Model 1413
Author: Ilya Tsemenko
Created: 03 February 2024 A quick look, teardown and reverse engineering of old bulk-metal foil resistor networks, VPG 1413

Golden resistor network - VPG VSM86 custom chip
Author: Ilya Tsemenko
Created: 27 January 2024 A quick look, teardown and reverse engineering of old bulk-metal foil resistor networks from VPG, VSM86

Air draft cover for Measurements International 6000 bridge
Author: Ilya Tsemenko
Created: 23 January 2024 3D printing air shield for Measurements International 6000A connections.

First data-logging run in 2024
Author: Ilya Tsemenko
Created: 12 January 2024 Updates to live datalogging setup in year 2024

LakeShore Cryotronics DT-670 diode temperature sensor
Author: Ilya Tsemenko
Created: 19 December 2023 Introduction to Lake Shore DT-670 cryogenic sensor for temperature down to 1 Kelvin.

Quick look at Agilent E3620A low-cost 2 channel DC power supply
Author: Ilya Tsemenko
Created: 10 December 2023 A quick teardown for the HP/Agilent/Keysight E3620A 27V/1A dual isolated channel DC supply

Sorensen DCS33-33E15 1U power supply teardown
Author: Ilya Tsemenko
Created: 07 December 2023 A peek inside 1.1kW 1U rack mount switch-mode power supply from Sorensen, Model DCS33-33.

Rusty Chroma 6334 DC Load power mainframe
Author: Ilya Tsemenko
Created: 22 November 2023 A quick look and teardown of the Chroma 6334 high speed 1200W DC load mainframe.

Metalwork parts for cryostat
Author: Ilya Tsemenko
Created: 15 November 2023 One tiny step for xDevs.com cryostat to test semiconductors under extreme conditions.

Fluke 5725A repairs
Author: Ilya Tsemenko
Created: 12 November 2023 Repairs on Fluke 5725A amplifier for Fluke 5720A calibrator

Keithley 1483 Low thermal connection kit
Author: Dr.-Ing. André Bülau
Created: 29 October 2023 A quick look at microvolt low thermal connection kit from Keithley, Model 1483

A peek inside advanced on chip DC-DC VRM : Intel FIVR
Author: Ilya Tsemenko
Created: 24 October 2023 Brief look at Intel's advanced CPU packaging and fast on-package/on-die voltage regulators.

Stepper motor driver : IMS IM483i
Author: Ilya Tsemenko
Created: 15 October 2023 A quick look on a motor driver from Intelligent Motion Systems Inc.

Diodes for cryogenic temperature sensing
Author: Ilya Tsemenko
Created: 29 September 2023 A brief look at specialized silicon diode temperature sensors for temperature sensing down to 1.5K.

Heavy ppms of September
Author: Ilya Tsemenko
Created: 26 September 2023 Cryostat build project for cold head operation.

Holy grail of time ppms, teardown pending
Author: Ilya Tsemenko
Created: 06 September 2023 A quick look at the core of the atomic time reference from HP 5061B

DC-DC module from HP 4263B LCR meter
Author: Ilya Tsemenko
Created: 23 August 2023 Repairs of cheap DC-DC module, found in HP benchtop LCR meter, model HP 4263B.

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