Reed sensors in Automobile Sun Visors
Automobiles are fitted with visors that can be swiveled downwards and outwards to block the sun from the driver or passenger’s eyes. These visors also come with a vanity mirror under it that may have a slide that turns on a tiny lamp for use of the mirror at nights. Closing the slide over the mirror turns the lamp off and also protects the mirror. If by chance the light is turned on and the sun visor is closed without closing the sliding door, the lamp should switch off. This is achieved by wiring a reed sensor inside the shaft with a magnet on the swiveling visor which shuts off the lamp when the visor is closed. A reed sensor and a magnet is also used in the sliding mirror assembly to turn off the lamp when the slide is closed.
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.
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.
R3 Miniature SMD Reed Sensor
|Omni polar, normally open (NO), 16.25 mm SMD and low-profile SMD pitch. 10 W...Continue reading|
R2 Standard size SMD Reed Sensor
|Omni polar, normally open (NO), 19.5 mm SMD and low-profile SMD pitch, 10 W...Continue reading|
MS-212 Ultra-miniature Cylindrical Sensor
|Diameter 2.6 mm x 12 mm long, omni polar, switches loads of up to...Continue reading|