H - Electricity – 02 – H
Patent
H - Electricity
02
H
323/4
H02H 3/32 (2006.01) H02J 7/00 (2006.01)
Patent
CA 1276228
ABSTRACT OF THE DISCLOSURE This invention includes an automatic on/off circuit applying power to an electrical unit, such as a radar receiver, from the electrical battery/generator power source of a motor vehicle, in which a varying electrical noise signal is superimposed whenever the vehicle's engine is running and in which said noise signal is absent whenever the engine is not running for automatically turning such unit "on" when the engine is running and for turning said unit "off" after the engine has stopped, comprising; switch means electrically connected between said electrical power source and said electrical unit for receiving power from said electrical power source, said switch means being electrically switchable between "on" and "off" electrical states to correspondingly transmit and not transmit said power to said electrical unit for turning it "on" and "off"; sensor means electrically connected to said electrical power source for sensing the presence of absence of said varying electrical noise signal super- imposed thereon, said sensor means being operable to produce a first electrical output signal when the presence of said varying electrical noise signal is sensed end a second electrical output signal when the absence of said varying electrical noise signal is sensed; and time delay means electrically connected between said sensor means and said switch means for receiving said respective first and second electrical output signals from said sensor means and being actuated in response thereto to corresponding first and second output states after lapse of a preset period of time, said time delay means when actuated to said first state from said second state after lapse of said preset time period causing said switch means to switch from said "off" to "on" state and when actuated to said second state from said first state after lapse of a preset time period causing said switch means to switch from said "on" to "off" state.
556401
Farmer Kurt L.
Nusairat Abdul K.
Fox Electronics & Technology Inc.
Gowling Lafleur Henderson Llp
LandOfFree
Automatic on/off circuit with time delay does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic on/off circuit with time delay, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic on/off circuit with time delay will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1271288