Steal power from a max232?

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What would be the drawbacks to tapping the +/- 10v produced by a
Max232 chip to power a comparator or two?

 

[Allen Bong]

What would be the drawbacks to tapping the +/- 10v produced by a
Max232 chip to power a comparator or two


What would be the drawbacks to tapping the +/- 10v produced by a
Max232 chip to power a comparator or two

Dont know about the comparators, but I have used the -10V for the
contrast control for my 14-pin LCD display and it works well.

Allen

 

[[email protected]]

What would be the drawbacks to tapping the +/- 10v produced by a
Max232 chip to power a comparator or two?

The 232 chips are designed for a bit of cheating since they were
created in the era of serial mice. If you can design your circuitry to
run from a single positive supply, it is easier on the 232 chip. That
is, the negative supply is just the positive supply run though an
inverting charge pump, so the negative supply is softer than the
positive supply.

 

[[email protected]]

The 232 chips are designed for a bit of cheating since they were
created in the era of serial mice. If you can design your circuitry to

Mice are still serial!

 

[MooseFET]

What would be the drawbacks to tapping the +/- 10v produced by a
Max232 chip to power a comparator or two?

How about: You won't be able to get the MAX232?


I've powered op-amps from the generated voltages so a comparator
should also work.