8-bit relay output module of the role and working principle
That is, the original use of eight separate relays, through a certain technical means integrated into a whole, as a module, through the corresponding wiring to play the original eight relay function, eliminating the connection between the relay.
The working principle and characteristics of the relay
The relay is an electronic control device, it has a control system (also known as the input circuit) and the control system (also known as the output circuit), usually used in automatic control circuit, it is actually a small current to control the larger A "automatic switch" of the current. So in the circuit plays an automatic adjustment, security protection, conversion circuit and so on.
Electromagnetic relay is generally composed of iron core, coil, armature, contact reed and so on. As long as the coil at both ends with a certain voltage, the coil will flow through a certain current, resulting in electromagnetic effects, the armature will be attracted by the role of electromagnetic force to overcome the return of the spring to pull the iron core, Moves the contact with the static contact (normally open contact). When the coil power, the electromagnetic force will disappear, the armature will be in the spring of the reaction force to return to its original position, so that the contact with the original static contact (normally closed contact) pull. So that pull, release, so as to achieve the circuit in the conduction, cut off the purpose. For the relay "normally open, normally closed" contacts, it can be distinguished: relay coil is not in power when the state of the static contact, known as the "normally open contact"; in the state of the static contact As "normally closed contact".
That is, the original use of eight separate relays, through a certain technical means integrated into a whole, as a module, through the corresponding wiring to play the original eight relay function, eliminating the connection between the relay.
The working principle of the relay
When the relay is working, the electromagnet is energized, the armature is sucked down to make D and E contact, and the working circuit is closed. Electromagnet power loss when the magnetic loss, the spring pull the armature, cut off the working circuit. Therefore, the relay is the use of electromagnets to control the working circuit on and off the switch.
Advantages of using relay control circuits: control of high voltage with low voltage; remote control; automatic control.
Turn left to turn right
The relay is an automated electrical switch that operates by electromagnetic induction.
