A Passive Transformer Core Grounding Current Overlimit Warning Circuit

The current commercial transformer core grounding current monitoring device requires an external power supply when working. And the price is high. Design a passive transformer core grounding current over limit alarm circuit for this purpose. This circuit no longer requires an external power supply. At the same time, it has outstanding advantages such as accurate and stable over-limit alarm current, safe and reliable operation, simple circuit, compact size, and low cost. Possess good application and promotion conditions.