The purpose of a multimeter is to enable you to test electrical circuits and record resistance, voltage and current measurements for future reference. Recording circuit measurements during alarm ...

It’s a state-based Nixie multimeter, and it’s going to be freakin’ awesome. The basic plan of the multimeter is a precision 1V voltage reference, a bunch of opamps, and a ton of resistors to form a ...

Recently I acquired a Philips PM2535 system multimeter with slightly leaking LCD. The photo below shows how this multimeter was advertised. The leakage was not really serious. The multimeter system ...

Capacitors fail and burn, often taking some PCB laminate along for the ride. Here’s the story of replacing parts and bringing this classic multimeter back to life. It’s been 10 years since a certain ...

HP3457-OLED-display A modern replacement for the low contrast HP3457 Multimeter LCD HP3457 is a great multimeter of the pre Keysight and pre Agilent era from HP. If you do some research on it, you get ...

Here’s an interesting and detailed teardown and repair of a Keithley 2001 7.5 Digit multimeter that is positively dripping with detail. It’s also not every day that we get to see someone using x-ray ...