External reference detection circuit of power time-frequency signal detection equipment

• Main Authors: ZHU WEIWEI, WU XINHUA, YING BINJIE, ZHANG BEIJIANG, LYU SHENJUN, LAN WENZE, SONG YAN, YANG DEMING, LIN XUYI
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2021
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model discloses an external reference detection circuit of an electric power time frequency signal detection device, comprising a transformer, a comparator, a DC bias circuit, a unidirectional conduction circuit, a parallel branch, a triode, a divider resistor and a power supply VCC, the unidirectional conduction circuit comprises a blocking capacitor and a diode, and the parallel branch comprises a boost capacitor and a parallel resistor; the circuit adopted by the utility model is simple and effective in connection, channels for detecting signals can be switched through the output control switch, weak signals to be detected can be effectively identified through the amplifier, the signals to be detected are compared through the comparator, and the identification degree of the signals to be detected is improved. 本实用新型公开了一种电力时频信号检测设备的外参考检测电路，包括变压器、比较器、直流偏置电路、单向导通电路、并联支路、三极管、分压电阻、电源VCC，单向导通电路包括有隔直电容和二极管，并联支路包括有升压电容和并联电阻；本实用新型采用的电路连接简单有效，对通过输出控制开关能够对检测信号的通道进行切换、通过放大器能够有效的识别较弱的待检测信号，通过比较器对待检测信号进行对比，提高