Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

Magnet sensors for Tension Monitoring in Coil Winders

Magnet sensors in Winding count and tension sensing and in Coil Winders
Coil Winder

Coil Winders help wind bobbins with Copper wire and these bobbins are used in various applications such as in reed relay coils, microphone, speakers, motors and generators. Coil winders, or coil winding machines, as they are also know, wind bobbins with the enameled Copper wire at very high speeds.

For the winding to be consistent as well as to ensure cable cuts are minimized, closed loop tension control systems are used. The wire, which is to be wound, is usually taken through a spring, which gives cushioning when winding on bobbins, which are not circular. The purpose of this arm is to also act as a buffer for feeding wire to the bobbin, during high speed winding.

A reed sensor mounted on this arm, with a magnet mounted on the lower limit stop ensures that the optimum tension level of the wire is always maintained during winding and this provides a closed loop system. Reed Sensors can also accurately count the number of turns on a bobbin, as it is being rotated, and this helps the controller maintain a uniform speed of winding across multiple spindles.

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

Position sensing A Position Sensing Application is one which requires the end position of a movement...Continue reading ->

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.

R2 Standard size SMD Reed Sensor

Standard Size Reed Sensor Omni polar, normally open (NO), 19.5 mm SMD and low-profile SMD pitch, 10 W...Continue reading ->

MS-108 Standard Size PCB Mountable Reed Sensor

Standard size pcb mountable reed sensor Omni polar, normally open (NO), epoxy encapsulated, 17.7 mm PCB mountable pin pitch, capable...Continue reading ->

SM-1322 Sub Miniature Reed Switch

Sub Miniature Reed Switch Size The SM-1322 is a robust and reliable, Form A type 13.0 mm Sub Miniature...Continue reading ->

LV-1925 Reed Switch for Line Voltage switching

Reed Switch for Line voltage switching The LV-1925 Reed Switch is designed for endurance when switching line voltage loads of...Continue reading ->

IL-2022 Reed Switch for Inductive Loads

Reed Switch for Inductive Load The IL-2022 Reed Switch is designed for endurance when switching Inductive loads. Available with...Continue reading ->