GB5034008038518900099
A HALF INCH MICROPHONE CAPSULE FOR ELECTRO ACOUSTIC SENSORS. THEY DO NOT COMPRISE A COMPLETE WORKING SYSTEM THEMSELVES AND MUST BE COMBINED WITH PRE AMPLIFIERS. THIS SUB ASSEMBLY THEN FORMS PART OF A COMPLETE SOUND LEVEL METER OR SIMILAR PRODUCT. THE CAPSULES ARE CONSTRUCTED FROM HIGH ALLOYED STAINLESS STEEL, AND THE DESIGN INCORPORATES AN ALL METAL , HIGHLY TENSIONED SENSING DIAPHRAGM AND A QUAZI PERMANENT ELECTROSTATICALLY CHARGED FLUOROPOLYMER COATING UPON ONE INTERNAL PART TO PROVIDE PRE-POLARISATION , ELIMINATING THE REQUIREMENT FOR A POLARISING SUPPLY BY THE PREAMPLIFIER. IT HAS A SINGLE SENSING ELEMENT COMPRISING OF A METAL DIAPHRAGM SUSPENDED OVER A SOLID METAL BACK PLATE, FORMING TWO ELECTRODES OF A CAPACITOR. IT TRANDUCES ACOUSTIC INTO ELECTRICAL ENERGY.