#$%^&*AU2017204729A120180301.pdf#####ABSTRACT AN ELECTRONIC LATCHING CIRCUIT A hydraulic circuit with electronic latching through valve assemblies to allow full control of ground engaging tools including raising, lowering, and providing regulated active down force pressure via a work vehicle valves with manual input while allowing a continuous pressure source to be used in parallel. Pressure transducers and electrically controlled valves along with an electric control circuit allow automatic switching between manual control and automatic control of the ground engaging tools. 141/5 tn Nt_ Lna :1 i 6 00 - - - -- - - ------------- - - - -L