OK, so how do I get LM wired for 6V operation if my power supply is 12V?
Pin 2 is grounded.
Pin 3 is 12V (supply)
Pin 4 is grounded (0V low)
Pin 5 is the variable signal from 0V to 6V dc.
Pin 6 is shorted with (equal to) Pin 7
Pin 7 is connected to Pin 8 via 1k resistor, and to ground via 2 x 1k resistors
Pin 8 is therefore connected to ground via 1k
Pin 9 is connected to Pin 3 (bar mode)
Will 12V fry my system? If so, it may already be fried and this whole exercise will be in vain until I can order new components (but let's keep the faith and think happy thoughts). In fact, if the LEDs are connected to a back voltage of 12V, shoudn't the forward voltage (Pins 1, 10-18) be at least 9V, preferably 10V since the LEDs get fried at more than 3V? What about forward and backward current through the LEDs?
Does it matter what the amplitude/magnitude of the signal is? If so, why so?
Put my mind to rest, and I'll hook it up to the power supply.