lddang
Junior Member level 2
Hi I am a recent graduate and still have a long way in learning analog design and I need help with one of my problem. I want to design some sort of 'selecting/switching mechanism' that chooses between 2 inputs (Vs and GND) to output all depending on what a third signal (Select) is, essentially a 2:1 mux (refer to picture).
And the following truth table as follows.
Here's the kicker. Vs is the only power source in the circuit. I have no idea or where to begin on how to power the "switching/selecting" mechanism if I cannot use another power source to do so. Bascially "SELECT" is a jumper that either close or open to do the selection.
And the following truth table as follows.
Select | Vout |
0 | Vs |
1 | GND |
Here's the kicker. Vs is the only power source in the circuit. I have no idea or where to begin on how to power the "switching/selecting" mechanism if I cannot use another power source to do so. Bascially "SELECT" is a jumper that either close or open to do the selection.