captadores

Captadores is a term used in Portuguese-speaking contexts to refer to devices that capture, collect, or convert a quantity from one form to another. In general, they are transducers that transform physical phenomena such as vibration, light, heat, radiation, or gas into measurable electrical signals or usable energy. The exact meaning of the term varies by field, but the core idea is capturing information or energy from a phenomenon of interest.

In electronics and music technology, captadores are commonly associated with instrument pickups, especially magnetic pickups for guitars and basses. These devices typically feature magnets surrounded by a coil; when strings move, they induce a changing current that is sent to amplifiers. There are also piezoelectric captadores, which generate voltage from mechanical strain and are used in acoustic guitars or contact pickups. They influence tone, impedance, and signal level and often require preamplification and impedance matching.

In instrumentation and sensing, captadores include devices that detect light, radiation, heat, or chemical substances and convert the response into electrical signals. Examples are optical detectors (photodetectors), radiation detectors, gas sensors, and thermosensors. Such captadores are essential in cameras, safety systems, medical devices, industrial instrumentation, and scientific research.

In energy and environmental contexts, the term can refer to devices that capture resources or emissions. Thus, captadores de carbono (carbon capture devices) are technologies designed to remove CO2 from industrial processes or the atmosphere. The terminology and scope of captadores can vary by region, but the unifying concept is the capture and conversion of a phenomenon into a usable signal or energy.