From: sleeper75se (sleeper75se_at_yahoo.se)
Date: 2002-06-08 02:04:29
Hi Joerg,
--- In buildcheapeeg_at_yahoogroups.com, "Joerg Hansmann" <info_at_jhansmann.de> wrote:
> > 2) Settling time, and 3) DRL
> >
> > I really want the DRL to work, so I guess the input capacitors
will
> > have to go. :-(.
>
> Not necessarily. You also have the option to redesign the DRL
> circuit from an I-controller to a more appropriate type for this
> application e.g. PD-controller.
A PD-regulator and automatic depolarization sounds like a project for
v2. :-) For starters, I will need to re-read some control-theory ...
nice ideas though.
> > The INA126 is just $2.50, so one can't really complain. Is it too
> > noisy you think? (Not sure if you are being ironic here...)
>
> No. I think 1uVp-p is a quite reasonable and usable value.
>
> > Remember
> > that you get less noise when you look at narrower frequency bands.
> >
> > 5) 4060B oscillator/counter outputs
> >
> > Only 8, 32 and 512Hz are actually connected to something. I
labeled
> > all outputs as a reminder to myself.
>
> I thought the numbers were the divisors. My fault.
> However IMO a low frequency like 1Hz or 0.5Hz would be more
important
> than 512Hz because the higher frequencies are already present as a
part
> of the fourier-series (or was it Taylor ?).
Maybe I should explain my intent: The 8 or 32 Hz signals can be used
for calibration or impedance testing or something. The 512Hz signal
provides a stable clock source for the ATtiny15.
Regards,
Andreas
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:43 BST