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There are several ways to test a DC power supply, and here we present only a few common methods.
Conductivity Test: You can use the multimeter's conductivity mode to accomplish this test. Touch the positive and negative terminals of the power supply with the multimeter pens. If it is on, the multimeter will beep. This test is designed to determine if the power supply is energizing and if there are any breaks in the wiring.
Voltage Test: You can use the DC voltage mode of your multimeter to accomplish this test. Touch the positive and negative terminals of the power supply with the multimeter pens. The multimeter should display the voltage output from the power supply. Compare this voltage to the rated voltage of the power supply to make sure it is in the correct range.
Load Test: You can connect a load (such as a light bulb or motor) to the power supply and measure the voltage and current with a multimeter. The voltage should be stable and within the expected range; the current should be within the rated current of the power supply.
Ripple Test: You can measure the AC component of the power supply output voltage. Connect an oscilloscope to the output terminals of the power supply and measure the voltage ripple. The ripple voltage should be as low as possible and within acceptable limits.
Always test the power supply with care as specified in the operation manual and safety guidelines. If you are unfamiliar with electronic testing, it is best to consult a professional or use pre-constructed test equipment.
What does the frequency of electricity mean? Here are the basics of frequency, regionality, and measurement Since electricity and voltage are invisible things, many people will think they are elusive. But in fact, they are only invisible, and it is not difficult to understand them. Below, we will introduce the frequency basis of electricity and voltage in an easy-to-understand way, regional differences in frequency, and how...
View Full VersionSpectrum analyzers are primarily used to measure the amplitude of an input signal in relation to its frequency. A signal analyzer, on the other hand, measures both the amplitude and phase of an input signal at a single frequency. For more information, see the technical overview Spectrum Analyzers and Signal Analyzers. ,
View Full VersionWaveform sequencing lets you create multiple configured waveforms that contain multiple common segments. Sorting lets you build complex, long waveforms using as little instrument memory as possible. Waveform sequencing lets you save storage capacity by replaying shorter waveforms at different locations on the signal as needed. Many tests require long waveform memory records. The required record length...
View Full VersionMany people use digital multimeters to easily measure current, voltage, resistance, etc. However, there is a drawback to using a digital multimeter to measure current, namely: the circuit must be disconnected and the digital multimeter must be connected in series with the circuit under test in order to make the measurement. In this case, a current probe can be used instead of a digital multimeter to make measurements. Since the electrical connection of the circuit is no longer required, the current probe is more time-consuming...
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