Transducer with at least one electrode of a first type, an electrode of a second type and at least one ferroelectret

摘要

The invention relates to a converter (1) with at least one electrode of a first type (2), at least one electrode of a second type (3) and at least one ferroelectret (6). The transducer (1) also has at least one electret (4), the electrode of the first type (2) being conductively connected to the ferroelectret (6), and the electret (4) to the electrode of the first type (2) by at least one Air gap (5) is spaced and the electret (4) and the ferroelectret (6) with the electrode of the second type (3) are conductively connected. The invention also relates to an ultrasonic sensor and a microphone, which have such a transducer (1).