Operating Principle of Magnetic Transducer

The operating principle of a magnetic transducer is herein described. The magnetic flux from a magnet produces a bias magnetic field at the tip of the iron core, drawing a diaphragm toward itself by a suitable force. If electric signals (for example, rectangular shaped voltage with a frequency of 3.2 KHz and 1.5 Vo-p) coming intermittently at a fixed frequency from an external oscillating circuit are input, an electric current will intermittently flow through the coil, generating an intermittent magnetic field at the tip of the iron core.

The magnetic field drives the diaphragm up and down, generating the sound pressure corresponding to the amplitude of the diaphragm. This sound pressure is further multiplied by the resonance effect of the resonator installed on the case. Each product is designed and adjusted based on resonance frequency (fo) and resonance frequency (fv), so that excellent performance is obtained at the standard frequency. Accordingly, the functional composition of a magnetic transducer can be divided into the magnetic circuit unit, and the resonance unit.

Measuring Circuit

Electric signals of a specific frequency to a magnetic transducer, using the measuring circuit to measure the characteristics of the acoustic components. Please use this information in measuring your acoustic components and arranging driving circuits.

Magnetic buzzer

Magnetic Buzzer and Transducer Fig. 6 shows how the peep sound is composed of a collected body of the fundamental frequency and its integer fold frequencies. This sound composed of integer fold frequencies is generally referred to as a single sound which has a clearer tone than the low pitched buzzers have.