I have a circuit with several Illuminated SPDT switches.
http://www.jaycar.com.au/productView.asp?ID=SP0704
The switches have 4 legs at the bottom, the positive and negative leg's of the LED and the two sides of the switch. The LED and switch aren't connected in any way. When i wire the LED up it is always on. However i only want the LED to turn on when the switch is pressed down. Is there any way i can do this without bypassing the switch?
I realise that its a single pole, but i guess i'm wondering if anyone can think of a nifty circuit that could turn the LED on only when the switch is depressed. Ideally converting the SPDT into a DPDT. I've heard about relays but I'm not entirely sure how to wire one up or choose the correct one or if it would even work.
My circuit runs off a 9V battery and i'm using the switch listed above.(the LED runs at 8v). I'm trying the build a very basic 8-bit adder/computer that adds two 8-bit binary numbers together and the switches are the binary input.
http://www.jaycar.com.au/productView.asp?ID=SP0704
The switches have 4 legs at the bottom, the positive and negative leg's of the LED and the two sides of the switch. The LED and switch aren't connected in any way. When i wire the LED up it is always on. However i only want the LED to turn on when the switch is pressed down. Is there any way i can do this without bypassing the switch?
I realise that its a single pole, but i guess i'm wondering if anyone can think of a nifty circuit that could turn the LED on only when the switch is depressed. Ideally converting the SPDT into a DPDT. I've heard about relays but I'm not entirely sure how to wire one up or choose the correct one or if it would even work.
My circuit runs off a 9V battery and i'm using the switch listed above.(the LED runs at 8v). I'm trying the build a very basic 8-bit adder/computer that adds two 8-bit binary numbers together and the switches are the binary input.