Simple 5v Relay Circuit

Today in this article we are going to make a led flasher circuit with a relay.

Simple 5v relay circuit.

A 5v voltage regulator is used for giving 5v regular supply to the circuit. So let s make this simple circuit. An on off switch is added for the switching purpose of the relay. Let us discuss the working of the project.

A relay driver circuit is a circuit which can drive or operate a relay so that it can function appropriately in a circuit. Yes 5v is higher than3v so it will proportionately produce higher delay in that case if you have access to 12v you can apply it only to the rc network of the circuit and feed 3v to the relay this will allow you to get much higher delays without the need of high value caps or alternatively you can employ a voltage multiplier circuit to. The only link is by the magnetic field. Connect all on your proto board as shown in the diagram.

If the person holding the switch decides to take it apart. Relay switch circuit diagram working of the basic 5v relay circuit. Thermistors are really useful with 5v relays. Below is the circuit diagram for simple delay circuit using 555 ic.

You can use them to turn off a large motor if gets too hot or turn on a heater if the. The switching contacts of a relay are completely isolated from the coil and hence from the arduino. The working of the project is based on the functioning of the relay and the ability of arduino to control the relay. Note that a0 and d0 connect to the micro controller and the 5v and ground to the right of the diagram.

This is a simple circuit based upon a multi color led and a general npn transistor. Also check our 1 minute timer circuit using 555. In the above circuit 5v relay is powered by a 9v battery. Here we have used 9 v battery and 5v optional relay for switching the ac load.

To show you how to wire the relay let s build a temperature controlled relay circuit that will turn off a light bulb when the temperature of a thermistor reaches 150 f. Thus only 9 vdc passes through the handheld pushbutton. A simple project in which arduino uno controls a 5v relay is explained here. The relay in the circuit has a coil rated for 9 vdc and a switch rating of 10 a at 117 vac.

As mentioned earlier by interfacing arduino with 5v relay module we intend to operate an ac load like lamp. A temperature controlled relay circuit. The driven relay can then operate as a switch in the circuit which can open or close according to the needs of the circuit and its operation. A relay accomplishes this by using the 5v outputted from an arduino pin to energize the electromagnet which in turn closes an internal physical switch to turn on or off a higher power circuit.