A pulse generator comprises a CMOS inverter, a capacitive device and a resistive device, where the CMOS inverter has two terminals connected to a source voltage and a reference voltage, e. After estimating soil conditions, the theoretical optimum is estimated using an iterative technique. A first embodiment of the present invention includes a switchable light source, a switchable load, a controller, and a voltage sensor. The valve stem has a pathway to allow fluid from an inlet of the fluid flow passageway to flow across the flow control member between a first side of the flow control member and a second side of the flow control member opposite the first side to pressure-balance the fluid flow control member. The compound splitting module select a best split for translation by the MT system. The regulator is coupled to again charge the capacitor after the time period has elapsed.