I need some input about a Porshe 928?

I have 2x 12v input's. I need input 1 to activate 1 output. I need input 2 to activate both outputs. what chip?

• Hello! I'm trying to make some accent lighting for my truck. I will have two inputs. Input 1 - 12v when I turn the key on Input 2 - 12v when I open the door I want input 1 to turn on HALF of the led's I want input 2 to turn on ALL of the led's. What this chip would do is when input 1 is on, only 1 of the outputs is hot. When input 2 (or 1 and 2) is on, both of the outputs are hot. Let me know if you know a chip that can do this or if you know a website that might know. Thanks!

• Answer:

  Sounds like a job for boolean logic: Wire half the LEDs to wire "X" Wire the other half to wire "Y" Call the key "A", and the door, "B". Then write: x = a + b, where "+" means logical "or" y = b when door is open or key is on, (or both) then the x half lights. when the door is open, the y half lights, independantly. You need 1 logic "or" gate (chip 7432, perhaps), or some equivalent wiring with diode logic. If using a chip, you'll also need something to drive the current with - a relay or transistor. If using the diode option, assuming the diode can handle the current, and you take care to limit the current to your LEDs, you can wire the door switch straight to one set of LEDS. Wire the door to the anode of one diode, and the key to the anode of another diode. Wire both cathodes together, then to the anode of your second LED chain.