I'm trying to make a VU meter using a lm3915 dot/bar driver using this circuit:
A few questions:
Joe Green
A few questions:
- How can the 12V VCC be connected to the anode of each LED and not blow them up? Because if only 1 is on...then isn't the LED getting the full 12 volts? Or is there something I'm not seeing?
- This schematic is reccomended by NI, but it appears some people modify it:
- This meter looked like it works well: http://www.youtube.com/watch?v=EDZFk5os5Pw but the schematic is quite different... http://bit.ly/yVF3V If I followed that schematic, do you think everything would still work?
Joe Green