Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Do simple calculations with your own math box. Ralph Smith The next ...

Models 5231 and 5233 TRMS digital multimeters feature a non-electrical contact testing (NCV) function for detecting live electrical circuits. Models 5231 and 5233 are rugged TRMS digital multimeters ...

The circuit in Figure 1 also adds a simple serial link with no added components. If you connect two I/O lines, RA1 and RA2, configured as outputs, to RXD (Pin 2) and GND (Pin 5) of an RS‑232 connector ...

Back in the early days of electricity, lab workers could measure electric current in a circuit using an ammeter (galvanometer) and voltage using a voltmeter. From there, they could calculate ...

Everett, Wash.—Need to measure AC line frequency in the field? How about insulation breakdown resistance? Voltage of non-sinusoidal waveforms? Test-and-measurement vendor Fluke Corp. is combining the ...

Have you ever wondered whether your USB ports are really delivering maximum power? There are several ways to find out. Windows offers you built-in functions to check the performance of your USB ports.