BAMBERG & MONSEES GbR wrote:
>
> Hamish Seaton wrote:
> >
> > Amr
> >
> > Have a look at http://www.aade.com/lcmeter.htm
> >
> > Hamish
> >
> Also had a look at it. The schematics is shown,
> but the drawing is very coarse, nearly all the
> values gives for the parts are unreadable. Does
> anyone have a better drawing for this one or
> another circuit ?
>
> best regards,
>      Reelf

  In addition to hard to read numbers, some minor problems with that
circuit from my casual glance just now:

  B4 (I assume RB4 from my 16C622 time) is shown directly connected to a
relay, RLY1;  Just use the substrate protection diodes for de-spiking,
huh?  I'd "strongly consider" a protection diode across the relay, call
me paranoid if you want, but Ack!  Bad habit there.

  No provision for larger than 1uF capacitors, or for draining charged
capacitors, which would be nice safety-wise.  (Finicky, aren't I?)

  No specifics for the XTal (I assume 4MHz), but it's sold in kit form,
I imagine the right rock comes with the kit.

  The Voltage Regulator has power in on the right, output on the left
(Well, yes, it's just non-standard, I deal with newbies & teach 'em that
inputs are on the LEFT and outputs on the RIGHT, so I'm picky <G>)

  Mark the really finnicky <G>