Reed 4 Pin Relay Wiring Diagram

There are 2 types of 4 pin relay available. Output of the 74f00 to reed relay s terminal 1 input of a 74hc to reed relay s terminal 7 output of an other 74f00 to reed relay s terminal 2 as much as i can assume the terminal 2 of the reed relay chip is the one that controls the open and close states between terminals 1 7 and respective 14 8. We never admit that the image is our image the copyright is in the image owner we only help our users to find the information they are looking for quickly.

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Using a 4 pin relay for our example we must first identify the pins.

Reed 4 pin relay wiring diagram. 4 pin relay wiring diagram disclaimer. 85 and 86 are the coil pins while 30 87 and 87a are the contact pins. Here is a picture gallery about relay 4 pin wiring diagram complete with the description of the image please find the image you need. The terminal widths used on 4 and 5 pin relays are almost always 6 3mm wide however some more specialist relays can have terminal widths of 2 8mm 4 8mm and 9 5mm.

The difference between a 4 and 5 pin relay is that a 4 pin relay is used to control a single circuit whereas a 5 pin relay switches power between two circuits. Relay diagrams pirate4x4. If you want the image to be deleted please contact us we will delete it from our website. Single pole single throw spst relay wiring diagram.

For more in depth details click on spst relay wiring diagram. If the coil is not activated 30 will always be connected to 87a. Wiring diagrams for single pole. 4 pin relay 4 pin relays use 2 pins 85 86 to control the coil and 2 pins 30 87 which switch power on a single circuit.

4x4 and off road forum inside relay 4 pin wiring diagram image size 640 x 480 px and to view image details please click the image. Understanding how the relay works will help with diagnosis and modifications to vehicle systems. Looking at the diagram we see the pinout of a typical 12v relay. 87 and 87a are the two contacts to which 30 will connect.

The 9 5mm wide terminals tend to be used for higher power applications such as for starter motor solenoid activation and the smaller terminals tend to be used for electronics signalling where only very low currents are required. Numbers of a relay. In this video i show you how to wire a 12 volt automotive bosch style relay. Relays are easy to test but often misunderstood.

What happens inside a relay isn t magic but it is important. This video covers both 4 and 5 pin 12vdc relays. Note that each pin is numbered. Some manufacturers place a diagram and pin id on the outside of the relay case to show which pins are part of the control circuit and which pins are part of the load circuit.

The wiring diagrams below serve to show each pin of the relay and what they each represent so a user can know how to wire them up when connecting them. Is this assumtion right.