- Joined
- Sep 20, 2013
- Messages
- 17,548
- Points
- 113
Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please
All of these switches have one thing in common that others do not. That is a ground terminal. It is necessary to have a return path for the current through the LED. I had one actually short to this ground terminal once that took out a whole SMPS. That is rare, however. if the switch is a single pole single throw switch then you only need to wire your positive side to the input terminal and the out to that terminal and then the ground to the negative side of your supply. After that, every time you turn the switch on, the lED will light. Even with a single Li-ion battery as I have many of these and have done it.
All of these switches have one thing in common that others do not. That is a ground terminal. It is necessary to have a return path for the current through the LED. I had one actually short to this ground terminal once that took out a whole SMPS. That is rare, however. if the switch is a single pole single throw switch then you only need to wire your positive side to the input terminal and the out to that terminal and then the ground to the negative side of your supply. After that, every time you turn the switch on, the lED will light. Even with a single Li-ion battery as I have many of these and have done it.
Last edited: