Patent ID: 6856243
Filing Date: 2005-02-15
Classification: A01M

Abstract:
1. A pest deterrent device comprising: a sensor capable of detecting a pest; a trigger circuit electrically coupled to the sensor, the trigger circuit providing a triggering signal having a first polarity in response to a triggering event, the trigger circuit activating a load during the triggering signal, the triggering signal being coupled to a summing junction through a capacitor as positive feedback; a negative feedback path electrically coupling an inverse triggering signal to the summing junction to discharge the capacitor and turn off the triggering signal and the load after a triggering period, the trigger circuit providing a lockout signal following the triggering signal, the lockout signal being coupled to the summing junction through the capacitor as positive feedback and an inverse lockout signal being coupled to the summing junction as negative feedback to lock out the load until the lockout signal is turned off after a lockout period.