MAX DUTY STABILIZATION CIRCUIT

摘要

PURPOSE: A MAX duty stabilization circuit is provided to maintain a maximum duty of a comparator below 100 % stably. CONSTITUTION: An oscillator(22) comprises at least more than one resistor charging/discharging voltage to a condenser and also setting a voltage value applied to the condenser. A comparator(24) comprises the first output switching device(Q1) receiving a voltage from the condenser and the second output switching device(Q2) receiving an external input voltage inputted from the external, and it generates an output voltage by comparing the voltages supplied to the first and the second output switching device. A maximum voltage value of two output switching devices is determined by the voltage applied to the resistor.