Oh, I see what you're doing! :)
Yeah, I think the 3914 (in my opinion anyways) would
probably be your best bet. However, it's not "because
you want to measure voltage". It's 'cause of the
CALIBRATION.
Maybe an example would be in order.
If you were to use a 3914, engine idle would be, for
example, one LED being on. Move the throttle up, let's
say, a 1/4 inch ... and another LED pops on.
Another 1/4 inch ... another LED. Another 1/4 inch
... another LED. And so on. Until at full throttle,
all the LED's are on.
With the 3915 / 3916, the circuit would "still work".
In a sense that the "more throttle = more LED's".
It's just that the number of LED's per 1/4 inch would
not remain the same as the pot slid up. From zero to
1/4 ... from 1/4 to 1/2 ... from 1/2 to 3/4 ... it
would take more and more pot sliding to get "one more"
LED to switch on.
Curtis
--- battmain@... wrote:
Curtis, that was me asking. Basically I was asking
if there was any benefit of one over the other. The
original plan was to drive a few (10-15) LEDs as a
throttle position indicator by using a linear slide
pot to change the reference voltage.
Now with your explanation, it seems the 3914, would
be the chip to use since I want to measure voltage?
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