Application of Neodymium Magnets in Communication Industry
NdFeB magnet is widely used in microwave communication technology, including radar technology, satellite communication, remote control, and telemetry technology, electronic tracking, electronic countermeasures technology. In addition, neodymium permanent magnets are also used in the magnetron, magnetron traveling wave tube, cathode ray tube, and circulator.
NdFeB magnets, mainly made from Neodymium, Iron, Boron, has earned reputation on its high quality and competitive price, it has excellent properties of high remanence, coercivity, and Max. Energy Products. It’s widely used in motors, permanent magnet generators, electroacoustics, hard-disc drives, magnetic separators, permanent magnet bearing, system, switching Tech, NMR-analysis equipment, and MRI-tomographs, relay and etc.
Neodymium magnets are widely used in our daily life. I will briefly introduce some common detection applications of NdFeB magnets in our daily life. I hope you can get inspiration and find a suitable solution for your magnet application.
No external power supply is required in the application of dry spring sensors. In most cases, once the reed switch is sucked in, the load you need will be switched.
Usually hanging up the phone is achieved by mechanical off-hook switch. However, a custom magnet or sensor can also be used to accomplish this task.
There are signal communication applications:
Flip-over handset switch switching
Telephone line switching
Off-hook sensing
Interlocking
Mobile location sensing
Installation failure detection
How is a neodymium bar magnet used in the telephone?
Usually hanging up the phone is achieved by mechanical off-hook switch. However, this can also be done with a reed or sensor. The reed switch is directly loaded into the handheld area (or the receiver cover), and the magnet is loaded into the receiver. Reed switches and magnets can be installed in many locations, depending on the specific requirements of the telephone. In some cases, magnets used in handheld microphones or hands-free microphones can provide sufficient magnetic field strength to suck in the reed switch when the receiver is lowered.
With this method, the demand for new phone models is greatly increased. The reasons are as follows:
The mechanical system is fragile.
Mechanical pick-up systems can be damaged (especially by abused public telephones).
The off-hook system is susceptible to environmental impact.
The sealed reed pipe is not affected by any environmental factors.
The dry spring switch is not easy to wear. Because this application only switches low-level signals, contacts can switch billions of times. In this way, the service life of the telephone can be greatly prolonged.