Octavio Nogueira wrote:
> 
> >Why don't you simply use the sleep command? It uses only a few µA.That's
> the way we do it in all are batery powered >devices.
> >        Alias DarkBob
> 
> The problem is I have several op-amps in the same circuit and I need
> to turn all off.
> 
> Regards,
> 
> Octavio
> ======================================================
> Octavio Nogueira  - e-mail:   nogueira@mandic.com.br
> http://www.geocities.com/~oct_nogueira
> "ProPic" Production PIC Programmer Windows under US$20
> ======================================================

Use a 4011 to supply your regulator(s?) and other components that
use unregulated power. You'd battle to even measure the current
and you won't (really) need low-drop regulators because the
circuit is switched off as solid as you can get without a relay.

You can go even further by connecting the 4 NAND gates to form
two 'SR' flip-flops. With these you can let the PIC switch the
whole bangshoot off, and some external input switch it back on
when needed.

-- 
Friendly Regards

Tjaart van der Walt
mailto:tjaart@wasp.co.za
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