Joe,
locks up quickly enough and works fine as far as I can see. I
realise that the lamp voltage is only the output voltage of
the first op-amp after the photo-diode and may not be a
reliable indication of its true health.
the lamp voltage may be taken as the lamp's health indicator if
This morning, i've just remembered another weird
frequency divider i say on a chronorecorder (a device
used to adjust mechanical watches) a few years ago...
The frequency dividers stages (three or four, i'm not
sure) were unijunction transistor based staircase
generators using the charge
