What are the main differences between active and passive sensors?

Published: 26 June 2024
on channel: RealPars

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What are the main differences between active and passive sensors?

▶ Passive sensors need an external power source to operate. Examples include strain gauges, thermistors, and RTDs (Resistance Temperature Detectors).

▶ Active sensors, however, generate their own power and don't need an external source. A common example is a thermocouple.

Remember, while all sensors are transducers, not all transducers are sensors. Food for thought!

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