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There are two methods to absorb motor’s regenerative current; Voltage Clipping Method and Bleeder Method. The following describes the characteristics, functions and precaution for the methods. Fig.1 illustrates the typical test system.…
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The switch on/off testing can be performed with a combination of DC power supply and electronic load (See Figure 1). To successfully conduct the testing, it is important to know that the…
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Voltage dips, short interruptions and voltage variations immunity tests of the IEC 61000-4-11 standard can be easily tested using the power line disturbance simulation function of PCR-WE. As an example, it explains…
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PCR-LE/LE2 Series feature the Surge Suppression function that involves the process of protecting PCR-LE/LE2 from voltage spike. You can choose Surge Suppression to turn on or off depending on your load condition.…
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Power supply has the following three output terminals: - DC power supply: Positive/negative terminals and Ground (GND) terminal - AC power supply: L/N terminals and GND terminal. Upon using both power supplies,…
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Noise is an unwanted but inevitable problem in test systems including power supply sources, except batteries, which are low-noise power sources. Some amount of noise is always generated or relayed by power…
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As described in Part 1, electronic loads can act as a variable resistor and regulate a current depending on your applications. With this function, electronic loads can be used as substitute for…
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DC or AC regulated power supplies (hereinafter called ‘power supply’) can be classified into eight types and four categories in accordance with the output source (DC or AC), output range, polarity or…
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Basically, a regulated DC power supply (referred as DC power supply) is an electrical device that provides a constant output voltage; however, sometimes it cannot remain stable. There might be some factors…
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Welcome back to Part 2 of this series! Part 1 is all about the functions and characteristics of DC power supplies. In Part 2 here, we will take a look at the…
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In an AC circuit, power supply interruption can be mainly divided into two types: it occurs with low impedance or with high impedance. The power supply interruption with low impedance is a…
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In a test system, AC power supply is one of the significant components that can create test sequences for output and supply source to DUT. However, the power supply may cause a…
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