Automatic on/off digitally timed electronic switch

Details Automatic on/off digitally timed electronic switch Automatic on/off digitally timed electronic switch

G - Physics

01

K

73/164, 342/18

G01K 7/16 (2006.01) G01K 7/00 (2006.01) G01K 13/00 (2006.01) H03K 17/26 (2006.01) H03K 17/28 (2006.01)

Patent

CA 1076840

ABSTRACT OF THE DISCLOSURE An automatic on/off digitally timed electronic switch responsive to momentary operation of an actuator to turn on and remain on through a predetermined interval including an electronic switch having a latching circuit adapted for connection to a power supply; a drive circuit responsive to momentary supply of power by operation of the actuator to provisionally begin operating and provide a gating signal to operate the latching circuit; means interconnecting the latching circuit and drive circuit for continuing operation of the drive circuit independent of the momentary supply of power; and a digital timer circuit including counting means responsive to momentary operation of the actuator to begin counting and provide at a predetermined count an output to inhibit further operation of the drive circuit and de- energize the latching circuit. -2-

278350

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