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

Electromagnetic or Relay Type

Reed switches in food processor
Reed Relay in Food Processor Application

When it is necessary to control a circuit load by using a separate low-power signal, or where the states of several circuits must be controlled by a single signal, such types of Reed Switch applications can be classified are Relay Applications.

Reed Switches are used in Reed Relays that help switch a wide range of circuits and loads. Areas of application are primarily in automatic test equipment and in electronic instrumentation applications as the embedded reed switches have a fast operate time compared to mechanical relays, and run for up to a billion operations with consistent contact performance. Reed Relays are also particularly useful in switching extremely low current loads due to their low leakage current and are also useful for switching microwave and radio-frequency circuits.

Apart from straightforward single circuit loads, Reed Relays can be used to simultaneously switch multiple circuits and are available in a variety of configurations from simple single pole switching to multi-pole switching, in various contact forms such as normally open, normally closed, change-over, make before break, and latching, and also in custom Reed Relays capable of switching multi-pole circuits with custom mixed contact forms and more. Specific circuits can be turned off or on before switching other circuits and this feature is especially useful in safety applications.

On the high voltage and current switching side, specially designed reed relays using a thicker Copper winding are used to switch the loads at a specific current range, and these are used in critical current sensing applications such as food processors to stop motors at the slightest increase in motor load. Reed Relays find applications in overload protection and multi-pole multi-form reed relays are used in complex switching circuits in Automatic test equipments, signal switching, and encryption.

The basic construction of a simple single pole reed relay consists of a bobbin with four terminal pins, two of which are attached to the ends of the Copper winding, a reed switch centrally inserted into the bobbin and welded to two of the other terminal pins. This assembly is then placed within a relay cover which is then encapsulated. This simple reed relays works helps switch a higher circuit load with an operate voltage as per design, in most cases 5 or 12 volts. A diode is also added sometimes to help handle the back EMF from the winding. Some examples of Reed Relay type applications are listed below.

Example Applications

Reed switches and Reed Sensors in Portable Defibrillators

Defibrillator Defibrillator and impantable Cardioverter-defibrillators use reed sensors to alter the mode of operation using...Continue reading ->

Magnet sensors in Welding Equipment

proximity sensors in welding machine The time during which current is being used for welding and the time during...Continue reading ->

High Voltage Relays

High voltage relays The power industry uses many types of relays for signal switching as well as...Continue reading ->

Reed switches in Electronics and Science Kits

Reed switches in science kits Reed Switches are used in many science and electronic kits for experimenting on various...Continue reading ->

Reed sensors in Power switches for explosive areas

Reed switches in explosive area Reed Switches, being hermetically sealed and unaffected by the atmosphere and surroundings, can be...Continue reading ->

Reed switch based Reed Relays in Food Processors and Mixers

Reed switches in food processor Mixers and food processors use current sensing Reed Relays which cut off power to...Continue reading ->

Reed sensors in Contact protection Circuits

Reed switches in inrush current protection Reed switch applications require contact protection when used with loads having in-rush current. Reed...Continue reading ->

Reed switches in Reed Relays for Fax Machines

Fax machine Reed Switch based Reed Relays continue to be used in Fax Machines for switching...Continue reading ->