Ni-cad discharge limiter

  
The circuit disconnects the battery from the load when output voltage falls below a preset level. Cl charges through R1 and turns on Q2. Collector current flows through R2 turning Ql on and battery is connected to the load
Ni-cad discharge limiter - schematic

When the output voltage falls below a point set by RV1, Q2 turns off, Ql turns off and further discharge of the battery is prevented.




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