[time-nuts] Fury Interface Board: How about TI OPA277?

Bruce Griffiths bruce.griffiths at xtra.co.nz
Sun Nov 4 10:50:06 UTC 2007


Don Collie wrote:
> Can`t it be done with just 3 resistors?
> Cheers,.............................................Don C.
>
>   
No, you still need a stable negative voltage source.

In any case the collective decision appears to be that EFC ranges including

1) -10V to 0V

2) -10V to +10V

3) 0V to +10V

as well as parts of the above ranges.

There is no way that one can expand 0-5V into -10V to +10V with just 3
resistors.

Bruce




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