Hello,
I'm looking to create a kill switch using a relay. I have a switch but it only supports around 5 amps. This project I'm working on have circuits that draws more than 20 amps. I want to have a kill switch for emergency. I was thinking on using the toggle switch to signal a relay of high amp that will open the circuit so no current is drawn. I don't know how relays work, maybe someone here could help on the diagram of this idea if possible.
Thanks in advance.
Emmanuel,
Wikipedia says, "A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a separate low-power signal.
The simplest relay I can think of is a piece of metal in a mechanical switch that can be moved by a magnetic field to open or close a circuit. You can use a low power signal to energize an electromagnet that will control the piece of metal that can handle much larger currents.
For your application question on how to control a relay will be entirely dependent on the type of relay you choose. I bet you could find a relay that could be controlled by a 3.3V signal that you could control with a toggle switch.
Thank you,
Adam
