Students read a section of text then pass the next section on to another classmate either at random or as part of a pattern. Reading relay is a simple way to gamify reading tasks especially reading texts.
Relays
How to read a relay. It shows the components of the circuit as simplified shapes and the facility and signal friends amongst the devices. A copper coil around an iron core the electromagnet is held in a frame or yoke from which an armature is hinged. As i was finishing my previous column on reading data sheets for power mosfets which was targeted toward implementing a battery protection shutoff system i noticed several eeweb articles on the subject of relays. With the relay still energized supply b to pin 2 of the load circuit. Electrical control circuits are drawn with the standard. In one of the previous post in instrumentpedia i have described how to read an electrical drawing.
Comparing to other controllers it is very cheap. How to read relay wiring diagram wiring diagram is a simplified satisfactory pictorial representation of an electrical circuit. In earlier days instead of plc or dcs like controllers relays are used as controllers. These parameters are generally in scripted on the plastic or pvc case of the relayon. Of course we do have to worry about power dissipation in the coil to. The operating voltage of a relay is generally in dcsmall signal relays and low voltage power relays are usually in dc but mains control relays and contactors quite frequently have ac coilsthe rest of the terminals of a relay are used to connect either a acgenerally 5060hz or dc circuit.
This got me thinking about using a relay for my application instead of a power mosfet. Energize the relay control side by supplying b to pin 1 and a ground to pin 3. Connect the red lead to pin 4 and the black lead to ground. Inside a relay this is what the inside of an iso mini relay looks like. Here i am giving the standard symbols used for the electrical relay diagram. Now lets look what is electrical relay diagram.
The switching and contact pins of the relay have their respective maximum voltage and current ratingsparameters. Nowadays also for controlling small systems relays are using as controllers. One end of the armature is connected to a tension spring which pulls the other end of the armature up. A click should be heard. After all using a relay we dont have to worry so much about the power dissipation and voltage drop across the contacts.
Gallery of How To Read A Relay
