Q: I have a tenant who complained that a light fixture wouldn’t light. After I replaced the switch, the light still wouldn’t come on. I realized that all the bulbs were out. Anyway, is there a way to ...

While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

Keithley Instruments has added a Web-browser-based multichannel graphing toolkit to its Series 3700 System Switch/Multimeter family. The new data-visualization capability, which is included at no ...