Electronic scale anti -overcharging device

The utility model discloses a there is the unstable problem of power in electronic scale anti -overcharging device in its charging process of solving current electronic scale. It includes power acquisition circuit, power conditioning circuitry and bleeder circuit step by step, power acquisition circuit gathers the electronic scale power that charges, utilizes transport and placing device U2B and follower U1B feedback amplification power signal through power conditioning circuitry to constitute difference circuit adjusts power signal by triode Q1, Q2, power signal after last power conditioningcircuitry handles is called to charge through partial pressure circuit adjusts power electron donating step by step. Its step by step bleeder circuit adopt triode Q3, Q4's the compound switch circuitof constitution, the service power of cooperation resistive voltage divider principle regulation and control electronic scale, ensured the anti -overcharging device effectively in permanent power charge. The utility model has