Hello I am a graphic designer and not really good at electronics but for a project I have to make a circuit. I thought maybe you could help me. Sorry if the question is dumb. I have 3 switches. Each of them are attached to a lamp (Red, Blue, and Green). I want at least 2 lamps to be always ON. For example, all of them are ON. We push the blue one off. Then if we push the red one off, the blue one gets on automatically. Therefore, the circuit do not let less than one lamp to be off. Thank you so much and I hope it was clear. Cheers |
by sinasina
September 19, 2018 |
I would suggest a ring of three relays, with contacts interconnected so that only one can be on at a time. Arrange them to turn a light on when off. Make your buttons break the supply to each. |
by mikerogerswsm
September 19, 2018 |
by mikerogerswsm
September 19, 2018 |
|
Minor edit 'break' should read ' make'. |
by mikerogerswsm
September 19, 2018 |
Full circuit now shown. |
by mikerogerswsm
September 19, 2018 |
https://www.circuitlab.com/circuit/8c49xqypar9a Opens as pdf, use print/export button. Suitable relay 4 for ten quid: Suitable power: 4 x AA cell in series. If you use leds put 220 ohms in series with each one to limit the current. |
+1 vote by mikerogerswsm September 20, 2018 |
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