Using Secondary Winding on Current Transformer to charge a NiCD

Sep 17, 2003 1 Replies

I'm trying to design a circuit that utilises a Current Transformer to create a low current charging circuit on the secondary, for a 2.4V NiCD with the addition of a few components .



primary 4 - 6A load



1 : 100 = Isec approx 40 to 60mA into a short circuit

Isec ________ -->----O | O--->--| |-----||+ ILoad O | O |Low I | ||NiCD O | O |Charger |-----||- --


Well you need at least a diode in the "low I Charger cct" to prevent the nicad discharging through the secondary.

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