Design of Duty Ratio Measuring Circuit Based on Differential Voltage Amplifier
Sun Bing-quan · Keisou gijutsu · 2004
A duty ratio measuring circuit,which using differential voltage amplifier as core component,was designed utilizing the relationship between the duty ratio and the compensatory terminal of PWM IC. This circuit can directly display the duty ratio of output voltage of pulse power supply in digital,and provides a simple method for duty ratio measuring.