Logging Measurements over Time with a Bench Power Supply
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Traditionally, power supplies would only tell you the instantaneous output power. If you wanted to record data over time it required extra equipment and extra setup. Today, though, some modern bench power supplies include a built-in data logger feature. This is good for recording measurements over tens of seconds or longer and gives you insight into how your device’s power consumption changes over time.
For example, the Keysight E36200 Series power supply can record voltage and current on each channel up to five times a second. While this rate will not capture a fast transient, it is useful for looking at power trends over time (Figure 1).
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