Stan, I'm not familiar with a DIY battery. Please explain more.
I tried several circuits from the just plain lights to transistors to
operational amplifiers.
The water completing the circuit with a light bulb wasn't sensitive enough,
neither was the two transistor circuit I tried. The Op amp was so
sensitive, all I had to do was breathe on it and it would go off. I tried
to tame it down but it was still to sensitive to be sure I wouldn't get
false warnings.
The pods I'm sensing are battery pods and motor pods. Not a situation for a
sump pump. Any alarms mean I have to disassemble the pod to inspect them.
Thanks,
Dan H.
----- Original Message -----
From: "dino snider" <dinosnider666@hotmail.com>
To: <personal_submersibles@psubs.org>
Sent: Friday, March 05, 2004 12:35 PM
Subject: Re: [PSUBS-MAILIST] Leak Alarm
what about the DIY zinc air battery? place it low, when no air - water
instead - no current. flips light on. or just use light flashing on
capacitor rest of time - when it stops, turn on sump pump.
--
you said
Just a thought, but would a strategically placed spark plug work in line
with an indicator bulb? Open circuit (no light) indicates no water in
the
gap, closed circuit (red light?) means water is present. You can get
them
with a platinum electrode, easy to replace, and inexpensive...
Stan
_________________________________________________________________
STOP MORE SPAM with the MSN Premium and get 2 months FREE*
http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=htt
p://hotmail.com/enca&HL=Market_MSNIS_Taglines