Resistor ratio dividers based on N equal resistors
Author: Dipl.-Ing. André Bülau
Published: 06 February 2021 Method of making fixed resistor and voltage ratios from equal resistance networks.

Tektronix ADA400A Differential Preamplifier repairs
Author: Illya Tsemenko
Published: 28 April 2020 Restoration of four Tektronix Differential ADA400A Preamplifiers

Repair and teardown of Tektronix TMDP0200 and THDP0100 probes
Author: Illya Tsemenko
Published: 23 April 2020 Repair and experiments with Tektronix TekVPI high-voltage differential probes.

Tektronix TAP1500 probe repair
Author: Illya Tsemenko
Published: 13 April 2020 Repair of Tektronix 1.5 GHz single-ended active probe

Teardown and repair of Tektronix TDP1000 differential 1 GHz probe
Author: Illya Tsemenko
Published: 12 April 2020 Service of Tektronix TDP1000 active differential probe

Notes on Keithley DD-51 dual-line VFD replacements
Author: Ken Eckert
Published: 15 March 2020 Keithley DD-51 dual-line dot-matrix display replacements and display differences between BOE and Noritake-Itron PCBA.

Ectron 1120 Thermocouple/Voltage-Calibrator repair
Published: 06 June 2019 Repair of small, but very capable low-voltage thermocouple calibrator source.

Fluke 8842A repair and calibration
Author: Illya Tsemenko
Published: 09 September 2018 Repair and calibration of reader's Fluke 8842A benchtop DMM

Fluke 1529 Chub-E4 precision thermometer readout
Author: Illya Tsemenko
Published: 24 August 2018 Repair and testing of Fluke/Hart-Scientific 1529 Chub-E4 precision thermometer system.

Fluke 8846A 6.5-digit DMM teardown
Author: Illya Tsemenko
Published: 19 August 2018 Repair attempt of benchtop multimeter, Fluke 8846A.

Advantest R6581T 8.5-digit DVM/Ohmmeter repair
Author: Illya Tsemenko
Published: 28 February 2018 Quick and easy repair of another 8½-digit instrument from Japan.

Keithley 6517A electrometer restoration project
Author: Illya Tsemenko
Published: 07 February 2018 Repair of the destroyed Keithley 6517A electrometer/voltage source.

Fluke 5790A AC Measurement Standard repair
Author: Illya Tsemenko
Published: 05 July 2017 Troubleshooting and repair of Fluke 5790A AC Measurement Standard system.

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