Reed switches and Reed sensors in Wireless Microphones

Wireless Microphones convert sound into electrical signal that can then be used by other sound equipment for amplification or mixing or other. They are used in various fields starting with live recordings and concerts, the movie and music making industry, smart phones and personal computers, and even in hearing devices. The problem with the mechanical switches on microphones is that when powering on, these devices cause crackle.

To avoid crackle at the time of turning on or off, the microphones need to sieve out unnecessary signal transients. The best way to do away with crackle is to not use the standard mechanical switches for turning the microphone on or off. This is done by mounting a reed sensor on a PCB inside the microphone, having a sliding or push unit with a magnet fitted under it. This is sure to provide crackle free operation of microphones. Unlike conventional slide switches which wear out due to repeated mechanical movements of the slide contacts, the reed sensor is actuated when the magnet is slid into place, ensures that a good clean contact is made on the microphone, and no wear out occurs.

Application Classification

Applications are classified as Position Sensing, Pulse Counting, Electromagnetic or Relay, Temperature Sensing or Magnet Biasing types. This application is classified as follows and the link gives more information on best practices to help select the most suitable AT band and matching magnet.

Position sensing Type

When an application requires the end position of a movement sensed, or the sensing of a part when it comes into a zone, or when the Continue reading -> Mar 21, 2025

Recommended Products

The Reed Switches and Sensors used in such applications need to be robust, durable and efficient in meeting a high life expectancy. Our engineers work hard in life testing our products under various conditions, and our intention is to ensure end product durability and life. Although we wouldn’t want to restrict any of our products for use in only certain applications, the recommended products for use in this application are listed below.

Ultra Miniature PCB Mountable Reed Sensor, MS-104

Drawing of MS-104Drawing of MS-104 Pad Layout starFeatures5W Contact Rating. 10.1 mm PCB Pitch. Normally Open contact. Two Continue reading -> Dec 2, 2024

Micro Miniature PCB Mountable Reed Sensor, MS-105

Drawing of MS-105 Reed SensorDrawing of MS-105 PCB Pad Layout starFeatures10W Contact Rating. 12.7 mm PCB Pitch. Normally Open Continue reading -> Mar 21, 2025

Reduced Miniature Reed Switch, RM-1318

Full Length LeadsCropped LeadsSMD Formed LeadsLeads Formed for Horizontal mountingLeads Formed for Vertical Continue reading -> Nov 30, 2024