Patent ID: 6570369
Filing Date: 2003-05-27
Classification: H02M,H03K,H05B,Y02B,Y10S

Abstract:
A switching circuit connected between a DC power source supplying a predetermined output voltage and at least one load, comprising:a switch for switching on and off of the supply of the voltage outputted from the power source to the load; a pulse generator for generating a pulse for controlling the switch; an integrator connected with the switch for selectively integrating the pulse supplied to the switch; and a current detector for detecting the current supplied to the load, the current detector having first and second states, and outputting the first state when the current supplied to the load is greater than a predetermined value, or otherwise outputting the second state; wherein, the integrator operates for integration when the output from the current detector is the first state, and does not operate for integration when the output from the current detector is the second state.