I need to keep the fluid level in a tank in a particular range. I have a
little 12v pump to do the job, but now just need the simplest possible
circuit to turn the pump on when the fluid is at the "low" mark, and to
switch it back off fluid is at the "high" mark. I intent to just use
stainless steel or copper rods as the water level probes.

What is the easiest/cheapest way of doing this?

John





_______________________________________________________________________
John Brown
PhD (Clinical Psychology) candidate
                                       Email:  john.brown@anu.edu.au
School of Psychology                  Phone:  (02) 6125-3827
Room 124, Building 39, Psychology     Fax:    (02) 6125-0499
The Australian National University    Mobile: 0429 455 504
ACTON ACT 0200   Web: http://www.anu.edu.au/psychology/staff/BrownJ.htm

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