So a while back I put some lights in my door handles. This is nice because I drive through dark areas and I dump bodies in the woods a lot so it’s really difficult to find the door handles in darkness. Its great, but when I shut my parking lights off, which is what they are connected to, they also turn off, instantly. So I wanted a way to make them stay on for a few seconds after I shut my lights off. So after some searching and research I got a circuit design to work! It only has 1 active component, and it’s really easy to build. Here is a video of it working.
http://www.youtube.com/watch?v=SwUQHI6XmNs
-also, great thing about this controller is that it works from 5-15v, so you can use it in other applications too.
-I have lots of parts left over, so I could build a few "ready to go" boxes if anyone is interested.
-if you guys want a formal diy just let me know, but its pretty self explanatory so you shouldn't need one.
Diagram and parts:
Resistors
R1
Resistor 47 Ohm 1/4 Watt 5% Carbon Film (yellow violet black)
R2
Resistor 2.2 KOhm 1/4 Watt 5% Carbon Film (red red red)
R3
500 KOhm Potentiometer
Capacitors
C1
100uF 25V electrolytic capacitor
Transistors
T1
2N2222 Switching NPN Transistor
http://www.youtube.com/watch?v=SwUQHI6XmNs
-also, great thing about this controller is that it works from 5-15v, so you can use it in other applications too.
-I have lots of parts left over, so I could build a few "ready to go" boxes if anyone is interested.
-if you guys want a formal diy just let me know, but its pretty self explanatory so you shouldn't need one.
Diagram and parts:
Resistors
R1
Resistor 47 Ohm 1/4 Watt 5% Carbon Film (yellow violet black)
R2
Resistor 2.2 KOhm 1/4 Watt 5% Carbon Film (red red red)
R3
500 KOhm Potentiometer
Capacitors
C1
100uF 25V electrolytic capacitor
Transistors
T1
2N2222 Switching NPN Transistor
