include a current transformer 56 and a full wave bridge rectifier 152 which produce on outputs 106 and 107 of the rectifier 152 current signals proportional to the current in the line 32 as one skilled in the art would recognize suitable means other than the current transformer 56 and the rectifier 152 may be used to provide signals proportional to the current in the line 32 the control circuit 16 also includes a power supply 14 such as that described in the above referenced u s patent application ser no 506 944 entitled 34 power supply for a circuit interrupter 34 a time current trip signal generator 120 such as that described in the above referenced u s patent application ser no 658 239 which is a continuation in part application of application ser no 506 943 now abandoned entitled 34 trip signal generator for a circuit interrupter 34 and an instantaneous trip signal generator 130 described herein as described more fully in the foregoing application entitled 34 power supply for a circuit interrupter 34 the power supply 14 includes an energy storage circuit connected to the outputs 106 and 107 for storing energy derived from the current signals thereon the power supply 14 further contains a switch circuit and a control circuit which maintain the amount of energy stored in the energy storage circuit within a first range when there is no overcurrent in the line 32 the stored energy powers a regulated power supply which supplies operating power to other portions of the control circuit 16 as generally shown at 500 in fig1 stored energy within the first range is generally insufficient to reliably operate the interrupter.