A decade or so ago, I designed a simple circuit that included a quad optoisolator arranged in a full-wave analog-multiplier bridge (Figure 1). It sensed and calculated watts of ac-power consumption ...

Analog topologies abound for converting current to voltage, voltage to current, voltage to frequency, and frequency to voltage, among other conversions. Figure 1 joins the flock while singing a ...

You can also read this article online as part of the Article Series: What’s the Difference Between Watts, RMS and More. Both watts (W) and volt-amperes (VA) are units of measurement for electrical ...

How power works in a data center: What you need to know Your email has been sent Electricity is often one of the least visible elements of a shiny, state-of-the-art data center. Learn more about the ...

I'm sure there is a spec somewhere (VESA or something) but here are a couple of references. Power is watts = volts * amps. Even though there was a +5V pin on a VGA connector, it may not be suitable ...