In this review I will take a close look at the DROK DC to DC Step Down Buck Converter Module which uses a LM2596 Buck Converter IC The module also includes a digital voltmeter which can display either the input or output voltage. The output voltage is set by two push buttons. After fully testing […]
DC-DC Boost Converter Test & Review
Review and Test of a cheap DC to DC Boost Converter Module which uses the XLSEMI Integrated Circuit XL6009. Several modules are tested under different input voltage and output load conditions.
Peak Electronic Design Zener Diode Analyzer
New product review of a Zener Diode Analyser designed and manufactured by Peak Electronic Design Ltd. This is a nice little analyser which supports most Zeners, Avalanche diodes and reference diodes from 0V up to 50V. More details from web link below: http://www.peakelec.co.uk/acatalog/zen50-zener-analyser.html
Keithley 225 Current Source Review & Teardown
Review and teardown of a Keithley Instruments model 225 Current Source which dates back to 1976. These units are still very accurate today, with an accuracy of ±0.5%. A range switch and 3 decade switches can provide a current output from 0.1 nanoamps to 100 milliamps.
Time Electronics 404S & 404N DC Millivolt Source Teardown & Review
Here we review two Time Electronics Ltd. DC Millivolt Source calibration units. They use a precision reference zener diode, low temperature coefficient resistors and thumb switches to select a precise voltage accurate to 1 Micro Volt. They have 3 ranges and an accuracy of ± 0.05%.
Fluke 8842A Digital Multimeter Review & Teardown
A closer look at a Fluke 8842A Precision Multimeter and teardown. Manufactured in the 1990’s and had an accuracy on the D.C. ranges of up to ±0.003%. A very high quality meter.
Precision Voltage Reference Modules
Review and teardown of 3 types of Precision Voltage Reference Modules which are useful for checking the calibration of Digital Multimeters.
Thurlby 1905A Intelligent Digital Multimeter Review & Teardown
Review and teardown of the Thurlby 1905A Intelligent Digital Multimeter was designed and manufactured in the 1980’s by Thurlby Electronics Ltd. The meter is a 5½ digital manual ranging multimeter with keyboard programmable computing and data logging facilities. The basic accuracy is ±0.015% on the D.C. ranges.
Datron 1065 Autocal Digital Multimeter Review & Teardown
Datron 1065 Autocal Digital Multimeter review and teardown.
Muirhead D825G Decade Resistance Box Review & Teardown
Muirhead D-825-G Decade Resistance Box review, teardown and calibration check. Now 50 year old but still in calibration tolerance.