Get an old coil for induction and put a series diode to
the battery. Hang it someplace over wiring with a good
load feed.

voila...self contained clock with no dangerous
connection to high voltage.


"larry" wrote in message
et...
SolarFlare wrote:
get a small flexible PV panel

glue it to the face of the clock
add a series resistor and schottky diode to charge
the
battery.

the frugal will steal the parts from a defunct solar
calculator ;-)

Nick, put equal value cap and resistor in series with
each
line and your diodes in a small box with ac plug
(gutted
wall wart- there's justice?) then run small cable
(like the
old earphone cable) up to clock. Paint red insulator
over
any "hot" parts in clock. The "power" cable will be
about
as dangerous as any current small appliance "leakage"
since
most have .045 mF caps from EACH power lead to
chassis. UL
specifies an allowable leakage level. 5 ma sounds
familiar
since that's the level that GFI's are supposed to
trip at.

There's a thought, wire it any way you want to, then
plug it
into a gfi ;-) hook all your clocks, smoke
detectors, etc
together and use just one gfi. the gfi will use more
power
than you're saving.

have a good new year -larry / dallas