Samsung Electro-Mechanics Co., Ltd.

Tai Sung Kim

Kyung Hyun Kim

Dong Kyun Ryu

Sung Uk Lee

Peel Sik Jeon

Seung Heun Yang

Yun Seop Shin

Kyung Taeg Han

Jae Joon Yoon

Jae Han Yoon

Nam Su Koo

Kyung Su Han

There is provided an alternating current (AC) detection circuit for power supply, the AC circuit including: a rectifying part rectifying an AC voltage; a voltage division part dividing the voltage rectified by the rectifying part according to a preset division ratio; a voltage stabilization circuit part stabilizing the voltage divided by the voltage division part; and a first square wave generating part comparing the voltage stabilized by the voltage stabilization circuit part with an internal reference voltage, and generating a first square wave signal having a duty ratio according to comparison results between the stabilized voltage and the internal reference.

AC detection circuit for power supply

There is provided an alternating current (AC) detection circuit for a power supply, the circuit including: a rectifying part rectifying an AC voltage; a voltage division part dividing the voltage rectified by the rectifying part according to a preset division ratio; a voltage stabilization circuit part stabilizing the voltage divided by the voltage division part; a comparing part comparing the voltage stabilized by the voltage stabilization circuit part with an internal reference voltage and generating an input detection signal when the stabilized voltage is higher than the internal reference voltage; and an output part outputting an AC detection signal when the input detection signal is inputted from the comparing part.

Growing community of inventors

Seoul, South Korea

Tai Sung Kim