I agree with the idea of .15ma for longer application times maybe
good.

I use 3 AAA's in a holder strapped to wrist indefnitely, seems to
work fine for me.

Liked your idea of powering the relay timer with wall wart, and the
therapeutics current with the batteries.

If you want one more hot improvement, the use of ceramic capacitor
or non-polar type cannister capacitor of .1microfarad across the
output leads will dampen the spike almost completely gone. It's a
real nice touch V came up with. Optional, but real nice.

bob

--- In microelectricitygermkiller2@yahoogroups.com, "ransley"
<ransley@...> wrote:
>
> I started seriously getting some things done this weekend.
>
> I re-batteried one of my old units, turned it on and it went
Phoot! And that
> was all she wrote. I scavenged that one as merely a battery
container for my
> next project.
>
> I re-batteried another one and it worked good. It's been maybe two
years
> since I did wrist electrification. I used a brand new set of
stainless
> cotter pin electrodes, wrapped in teeshirt cloth and BE'd for
about 4-6
> hours Saturday night using contact lens sterile saline and some
glycerin as
> the wetting agent. I wore it on my right wrist. I slept like a
hammer while
> I did this.
>
> I awoke Sunday much refreshed but the wrist itch hit at 4:45 pm.
Sigh.
>
> I finally finished my new project Sunday:
>
> The old unit scavenged as a battery box holds 4-9v's. It's
connected to
> another box which has an industrial DPDT timing relay powered by a
24vac
> wallwart, and the relay is set for 5 minute polarity reversal. The
battery
> current is run through a 12v DPDT relay that shuts the power off
to the
> electrodes when the timing relay current is shut off. The timing
relay
> current is controlled by a master on/off switch and a 2 hour clock
timer.
>
> The electrodes are 12 gauge silver, soldered to copper lead wire,
wrapped in
> jersey, wetted same as above. Initial power at wetted electrode
was .38ma.
> It was not comfortable on my left wrist, but I took it for about
an hour +
> 45 minutes before I woke up and removed it.
>
> Monday afternoon the left wrist started itching but not as bad as
the right.
> Sigh. So much for the idea of the itch being caused by stainless
steel; it's
> the electricity.
>
> Monday night I added resistance to get the power down to .23ma at
wetted
> electrodes. On my left wrist I was only able to take it for about
15
> minutes. Sigh.
>
> I'm going to add resistance until I can get power down to
about .15ma or
> lower. I have reason to believe that even such low power will have
good
> effects if used long term.
>
> Daddybob
>