Preliminary article Created: "Sept 8, 2012"
Latest Update: "Sept 9, 2012"

Here is a Simple Circuit to produce a Ramp type of display.

It could be used as a Turn Signal Indicator, with either a Moving Dot or Bar Display.

A Second Schematic and PCB is also supplied to allow for a Higher Current Drive.
I used 2N3906 Transistors for my testing and can deliver about 200 mA.
But any PNP Transistor are OK.




A Kit of parts/PCB is Available:




Go Back to My "Projects Page"


Here is a Link to my Prototype, showing this in operation.
(http://youtu.be/vwEJ_TiDfKk)
NOTE: The Light Bulb in this Video is wired to show a Full display Sequence.

"The Schematic"
May be Subject to some Changes.

"The PCB's"

"Picture Overlay".
Note: The Little Part Beside the LM3914 is a SIP PIN JUMPER to change from BAR to DOT Mode.
It Could also be a Toogle Switch.

All Imformation in this Article is "Copyright protected".

 Chemelec 
 *Copyright © 2012*