How to classify relays according to structural characteristics

Update:24-10-2020
Summary:

1) Electromagnetic relay: an electrical relay that uses […]

1) Electromagnetic relay: an electrical relay that uses the suction force generated between the electromagnet core and the armature by the current in the input circuit.

2) Solid state relay: refers to a relay whose input and output are isolated with electronic components performing their functions without mechanical moving parts.

3) Temperature relay: A relay that acts when the outside temperature reaches a given value.

4) Reed relay: It is a relay that uses the reed action sealed in the tube and has the dual functions of the electric shock reed and the armature magnetic circuit to open, close or switch the circuit.

5) Time relay: When the input signal is added or removed, the output part needs to be delayed or time-limited before closing or disconnecting the controlled circuit relay until the specified time.

 

6) High-frequency relay: It is used to switch high-frequency and radio-frequency circuits with minimal loss.

7) Polarized relay: a relay that has a combined action of polarized magnetic field and control current through the magnetic field generated by the control coil. The action direction of the relay depends on the direction of current flowing in the control coil.

8) Other types of relays: such as optical relays, acoustic relays, thermal relays, instrument relays, Hall effect relays, differential relays, etc.