The high-pressure-side circuit is improved

To improve measurement accuracy electronic current transformers, in which the high-pressure side of the circuit is proposed to improve the current new design. Main narrative of the coil, high-side power, high-pressure side of the signal processing circuit that is integral circuit, phase shift circuit improvements. By using the new  Electric transformer  coil wound coil can and transverse surface of each turn and so on, to overcome the shortcomings of conventional Rogowski coil. A new high-voltage power supply scheme, the power supply circuit can bus high current and low  electric meter  can still work, to provide a stable output voltage, effective solution to the electronic current transformer high side power problems. Introduced a digital integrator, using integral algorithm design digital integrator has a higher accuracy and stability, excellent phase characteristics. Also proposed based on the all-pass Bessel filter constant delay filter, the amplitude characteristic constant, and in the low frequency range with a constant delay time.