Patent ID: 9650264
Date: 2017-05-16
CPC Classifications: B01D,C02F,E21B,H02M,Y02W

Claim:
1. A fluid conditioning system with a target load current to generate an alternating magnetic field directed at a fluid, the control system comprising a controller, a switch mode power supply circuit and a push pull AC drive circuit, wherein the controller is arranged to develop a first variable output having a frequency range that sweeps between a minimum frequency and a maximum frequency, and further arranged to develop a second variable output in the form of a duty cycle controlled signal, wherein the switch mode power supply circuit is arranged to develop a variable voltage in response to the second variable output and a current sense circuit, wherein the variable voltage is used to feed a voltage supply of the AC drive circuit in response to the second variable output and a current sense circuit, and the AC drive circuit is arranged to develop a drive signal for developing a target load current in response to the first variable output and the variable supply voltage, thereby forming a current feedback loop by monitoring the output current of the switch mode power supply circuit.