Moisture sensor

Details Moisture sensor Moisture sensor

1977-05-23

1978-10-24

Krawczewicz, Stanley T.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

324 51, 324133, 340604, 340378R, G01R 2702

Patent

active

041223896

ABSTRACT:
A soil moisture sensing device employs a pair of indicator lamps to indicate whether the soil is too dry, too wet, or has the correct amount of moisture. The device need employ only one transistor or one Darlington transistor pair to control both indicators. Consequently, the device is more economical to manufacture than "prior art" soil moisture sensing devices that must use two or more transistors. In the invention, too dry soil is indicated by non-conduction of the transistor with neither indicator illuminated, adequately moist soil is indicated by partial conduction with one indicator illuminated, and too wet soil is indicated by full conduction with both indicators illuminated.

REFERENCES:
patent: 3283244 (1966-11-01), Proctor et al.
patent: 3452347 (1969-06-01), Stimson
patent: 3513393 (1970-05-01), Myers
patent: 3649913 (1972-03-01), Flieder et al.
patent: 3828256 (1974-08-01), Liu et al.
patent: 3964039 (1976-06-01), Craford
patent: 3979667 (1976-09-01), Cornes
patent: 4002968 (1977-01-01), Reid
patent: 4006409 (1977-02-01), Adams

Affiliated with

Also associated with

Rating

Moisture sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Moisture sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moisture sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2338149