Digital Multimeter, Clamp on meter, Oscilloscope, Electronic component testing tools.
Reviews of ONLY THE BEST !! Tools for truly experienced and productive human brains.
Written by: Kiriakos A. Triantafillou, Industrial maintenance electrician, Hellas. (2012 - 2022 -> 2025)
Note: Front page includes recent Blog activities (past two years)… For older Reviews use navigation buttons
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Massive test of high quality multimeter regarding ammeter burden voltage
Burden Voltage this is most essential and frequently overlooked enemy of a perfect measurement.
An ammeter shunt allows the measurement of current but such a resistor will introduce losses which we should calculate manually.
Since January 2019, ITTSB blog toolbox this now includes a benchtop 6 ½ DMM with basic V DC accuracy of 0.0024 % , this is lots of precision and one of best applications’ using it, this is exploration of Burden Voltage at handheld DMM.
Kiriakos Project !! High precision resistors + Made in Greece creativity!
Resistors box for insulation resistance testers & verification of their calibration up to 4000 V POWERTRON GST4020
Seven dial decade resistance box for handheld and bench top multimeter calibration inspection.
Hermetically sealed Vishay Foil Resistors
Ultra-High precision resistance box exclusively made for bench top multimeter calibration inspection.
Hermetically sealed Vishay Foil Resistors
Calibration standard class.
"Gentlemen, START your engines"
Get ready to discover the Freeware data logging software, benchtop support added beginning of 2020, today this is a Priceless companion for our “digitally measuring investments”.
Software for FLUKE: 8846A, 8845A, FLK45, DMM4050, DMM4040 (Digital multimeter)
I was had to get challenged with SCPI commands syntax for two months, but We Made it !!!
In contrast with the market of handheld multimeter which this demonstrated since 2010 and later a significant quantity of modernized instruments, market segment of benchtop multimeter did not follow a similar progressive path.
A few brands just modernised product exterior design of their 6 ½ digit DMM, by setting their expectations at price tag of 3000 Euro which this is extremely high for the working class of electrical or electronics freelancer trouble-shooter.
Expected self adjusting move, when benchtop DMM market this facing such pricing anomalies this is consumer’s attention to steer at used equipments.
I did my best at exploring past champions of the year 2000 and after, and now at ITTSB Blog forum you may read tips which will help you regarding buyer expectations relative to software support, spare parts availability and product support (if there is any of those still offered by the manufacturer).
Four wires resistance measurement this is under sabotage at our times, mostly because modern manufacturing methods at China mainland, this now delivering to us unworthy in quality test leads and Kelvin clips.
The largest victim this is us that we try to get the best experience by the use of qualifying benchtop multimeter.
Any respectable industry of dedicated resistance meters, this now using reversal polarity method so to deal with thermal EMF, and the hidden advantage of this technology it is the detection also of EMF this caused by dissimilar metals.
Even quality benchtop multimeter of our times, they still use the Law of Ohm and DC current with stable polarity, at very low resistance measurements the quality of test wires and clips this is now highly important.
Unfortunately most consumers are unaware that low cost test wires and clips and banana plugs, all are now made due recycled brass which this is poorly separated from foreign objects, the outcome is the formation of some sort of alloy of unknown composition. The problem becomes greater when the formed alloy this containing air bubbles among with dust particles, and even substances which are known causing oxidation at pure brass or at copper.
Such low-end accessories then receive a low-end cover of gold paint used at toys making, and then they are presented as Gold-Plated goods.
The sabotage today touches all sectors, test leads, banana and BNC plugs, and even regular transformers windings.
I am now preparing one special Blog page, full of facts and links so this content to serve as line of defence against the Asian sabotage.
Ups and inverters testing after repair, this is a necessary action for any Industrial Maintenance Electrician or Electronics troubleshooter whom respects his reputation.
VARIAC adjustable transformer this is still most inexpensive and effective way having an adjustable ACV power source in your hands.
Instead getting a cheap poor quality VARIAC assembled in China or India (unreliable toys for hobbyists), I did follow route of DIY just for product design and case selection.
Most essential parts at this VARIAC project are the finest ones still available in our decade.
The outcome this is now a professionally grade adjustable ACV source for 0~270 Volts (VARIAC adjustable transformer among with Single Phase Voltage and Current Breakout Box, and a basic ACA 2x150W loads.
Regarding bill of materials and cost estimates, I did follow cost effective path but even so by using exclusively highest quality of parts, them complying to most recent IEC directives’.
I like to thanks DER EE ELECTRICAL METER CO. LTD. in Taiwan for their sponsoring of all necessary analogue meters for those two ITTSB Blog projects’ !!
Multimeter them getting constantly improved because ITTSB Blog it does record engineering innovations and even past made mistakes.
ITTSB Blog forum this is extension of ITTSB Blog and blogging activity this is far more frequent and topics they do cover far more wide spectrum.
Click over the image so to discover it too !
February 26 2022
I just did an major computer parts, hardware upgrade at my professional desktop workstation. But this new adventure made me realize the significance of using a recent made PSU with any fresh build.
I got motivated to get in touch, with the best makers (factory) of professional workstation and industrial workstation PSU.
ITTSB never touched this sector before, I think that latest innovations at pulsing power supply design that will be an interesting topic for my readers.