waveform e s is zero current however is flowing in the primary side of the converter through the inductor 325 this current shown by current waveform a 1 is increasing in magnitude during the interval t o to t o as shown by the ramp 403 and energy is being stored in the primary inductor 325 at the termination of the first interval of simultaneous conduction t o to t o the regulation control circuit 376 in accordance with the output voltage sensed biases the transistor 320 nonconducting hence current ceases to flow in the right hand side of the primary winding 303 designated in fig3 as 303r current however continues to flow in the left hand side of the primary winding 303 which is designated as 303l the current signal in winding 303l forward biases the output rectifier diode 318 a current subsequent to the overlapping or simultaneous conduction interval t o to t o flows into the output circuit to the load 309 this output current is shown by the current waveform a 2 the capacitor 308 is utilized to filter the ripple of the output voltage at the termination of the overlapping conduction interval t o to t o the voltage across the transistor 320 rises to some fixed voltage as shown by voltage waveform e 2.