allows collar 36 to be made so as to have a lower profile that collars in which the receiver and power supply are collocated or contained in a single housing fig1 illustrates an exemplary embodiment of switched capacitor power supply 21 in fig1 microprocessor shock controller 29 selectively controls shock deterrent paths 80 81 and or 82 collectively output pulse 40 through control signal 86 87 and or 88 the selection of shock deterrent paths 80 81 and or 82 controlled by microprocessor shock controller 29 may be set during production it is also contemplated that the user may determine which shock deterrent paths 80 81 and or 82 are controlled by microprocessor shock controller 29 after manufacture as shown in fig1 control signals 86 87 and 88 which are directly related to the rating of power supply 14 activate one or more of multipliers 83 84 and 85 multipliers 83 84 and or 85 which may include storage capacitors in response to the control signals 86 87 and 88 store and multiply energy supplied by power supply 14 either directly or via microprocessor shock controller 29 and then release the stored energy when the multiplier approximately reaches a maximum storage level the released energy is provided to probes 7 and produces a shock sufficient to deter the animal or human from leaving the predetermined confinement area shown in fig1 5 when multipliers 83 84 and or 85 are connected in series as shown by interconnections 89 90.