Who has the circuit helmet near electricity alarm? Or how it works?
Special note: near electric induction alarm, high frequency, no DC electrostatic warning, because the single overhead electric field around the stable high detection sensitivity, because the equipment is mainly used for detection of outdoor overhead line, the detected voltage according to the need in production equipment within certain limits to adjust.
Nearly electric alarm monitoring of signal receiving front-end processing, remove the 50HZ frequency signal through digital filtering to eliminate the interference signal, analyzing the signal strength, when it reaches the preset value, a wireless alarm signal to the receiver, the receiver receives the signal after the alarm, prompting the user equipment has been close to the power, please note safety warning system voltage warning of above 220V frequency 50-60HZ, circuit through digital filtering anti-jamming, stable and reliable
