Don't always work out.


David Josephson,

My 555 based voltage to frequency converted worked sort of but only
in the range of 9 volts to 12 volts.

Do you have any experience with the KA331 ? I ordered some from
Mouser.

Paul Lamar

I don't, but it certainly looks like a better approach than a 555. It
seems to be Fairchild's take on the National/TI LM131/231/331 which is
now made by TI. There is a lot more information on the TI datasheet than
Fairchild's.

David Josephson


Thanks David.

The Ti parts are 5 times more expensive.
I don't need anything too fancy or too accurate.

Here is what I am going to try.

Paul Lamar

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