Power is typically measured with a digital power analyzer or a DSO (digital storage oscilloscope) with power-analysis firmware. Most modern power analyzers are entirely electronic and use digitizers to convert analog signals to digital forms. Higher end analyzers use digital signal processing techniques...
The electrical equivalent can be constructed with a few operational amplifiers (op amps) and some passive linear components; all measurements can be taken directly with an oscilloscope. 电气等效物可以由一些运算放大器(op amps)和一些无源线性元件构成;所有的测量都可以直接用示波器进行。 LASER-wikipedia...
Figure 7. Use voltage probes and a current probe with an oscilloscope to measure voltage and current. Power Analyzers are generally the instrument of choice for household appliance power measurements and other power measurements with relatively high voltage levels, low frequencies and high accuracy requ...
Set the multimeter to read DC volts and use it to measure the power supply’s output. If the power supply has variable voltage, set it to a nominal value. Write down the value you measure with the multimeter. Disconnect the multimeter from the power supply. Connect the oscilloscope probe’...
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Measuring current with a current probe: When used in conjunction with an oscilloscope’s voltage measurements capabilities, current probes can enable a wide variety of important power measurements, such as instantaneous power, average power, and phase. To make sure your current measurements are as ac...
While a common DMM is typically the best option for measuring direct current down to the µA range, more sensitive applications like measuring nano or picoamps will require the use of apicoammeterorlow-level specialty instruments. Typically, you’ll need touse an oscilloscope to measure current...
NI SMUs can perform high-precision measurements with current sensitivity down to 10 femptoamps (fA). High-precision measurements require an aperture time that gives the SMU analog-to-digital converter sufficient time to integrate the signal and apply noise-rejection filters. The SMU aperture time...
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