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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.
Signal analyzers are capable of measuring the amplitude and phase of an input signal at a single frequency. The Signal Analyzer combines the large dynamic range of a swept-tuned spectrum analyzer with the power of a Vector Signal Analyzer (VSA) to perform in-channel measurements, such as Error Vector Magnitude (EVM) measurements, which require both magnitude and phase information. The VSAs are available in a wide range of sizes and sizes.
View Full VersionVector network analyzers (VNAs) are test instruments that measure electrical network parameters. They are essential for radio frequency (RF) and microwave component analysis of a wide variety of passive and active devices including filters, antennas and power amplifiers. Network analyzers are ideal for transmission, reflection and impedance measurements as well as s-parameter measurements during design and production. Network analyzers...
View Full VersionA DC power supply converts alternating current (AC) electricity to DC electricity either by a linear method or a switching method. Switching power supplies are more efficient, lighter in weight and smaller in form factor. Linear power supplies can achieve lower noise, but this is no longer an advantage with modern switching power supplies. ,
View Full VersionThis article will detail the basics of a clamp meter and the principles of measurement. When it comes to instruments that measure current, many people may think of analog or digital multimeters. However, if you want to make measurements without breaking the circuit, a clamp meter is recommended. Direct wiring method ...
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