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 of the coil winders 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 the arm of coil winders, 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 Position Sensing type application When an application requires the end position of a movement sensed, or the sensing of a part when it Continue reading ->

Feb 28, 2024

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 R2-S Gull-wing SMD Formed Reed SensorR2-S Gull-wing SMD Formed Reed Sensor Pad LayoutR2-F Low Profile SMD Formed Reed SensorR2-F Low Continue reading ->

Dec 2, 2020

MS-108 Standard Size PCB Mountable Reed Sensor
Standard size pcb mountable reed sensor Drawing of MS-108 Reed SensorDrawing of MS-108 Reed Sensor Pad Layout starFeatures10W Contact Rating. 20.3 mm PCB Pitch. Normally Continue reading ->

Oct 30, 2020

SM-1322 Sub Miniature Reed Switch
Sub Miniature Reed Switch Size This Form A type SM-1322 Sub Miniature Reed Switch is built with a 2.25 mm diameter glass with a higher wall thickness for better glass to Continue reading ->

Nov 8, 2022

LV-1925 Reed Switch for Line Voltage switching
Reed Switch for Line voltage switching The LV-1925 is a Line Voltage Reed Switch is designed for endurance at switching line voltage loads of 230V. Two versions are capable of Continue reading ->

Dec 2, 2020

IL-2022 Reed Switch for Inductive Loads
Reed Switch for Inductive Load This Inductive Load switching IL-2022 Reed Switch is designed for performance at moderate inductive loads of 15W. The flattened leads are Continue reading ->

Dec 3, 2020