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Battery charging regulator circuit

2016-05-10 18:17  
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Battery charging regulator circuit
This circuit uses the PHILIPS TEA1100 chip to charge the Nickel cadmium battery rapidly and effectively with the incremental peak principle. The circuit is as shown in figure 3-1. The incremental peak regulator can detect and judge the change of the battery voltage: if the voltage of pin-7 decreases 1% or more of the average maximum value, the charging will continue. The voltage of pin-7 must be in the range of 0.385V-3.85V, the voltage dividers R4 and R5 can be used to supply the voltage that is in this range. The values of R4 and R5 can be ensured by this formula: R4/(R4+R5)>0.35n. The charging current Io=1.25R10/R8IIR9)R2, the charging time t0=226X0.93XR2XC3. When the circuit does not detect the maximum voltage value, the circuit will stop charging after the time of T0.