测放大器， MAX4211显示，可以很容易地测量负载消耗的功率。一个乘法器输入连接到负载电压，负载电流是内部模拟，成比例的电压由内部的电流检测放大器。乘法器的输出（ VLIL ）是成正比的电压，负载功率。Maxim > App Notes > Amplifier and Comparator Circuits Keywords: high-side current-sense amplifiers, analog voltage multipliers, load-power monitors, A/D converters, voltage references Nov 08, 2010 APPLICATION NOTE 4507 Load-Power Monitor Improves High-Side Current Measurements By:Maurizio Gavardoni Abstract:Combining a high-side current-sense amplifier with an analog voltage multiplier, MAX4211 shown can easily measure the power dissipated in a load. One multiplier input connects to the load voltage, and the other to an internal analog of the load current―that is, a proportional voltage produced by the internal current-sense amplifier. The multiplier output (VL IL ) is then a voltage proportional to load power. A similar version of this article appeared in the August 1, 2008 issue ……