How to charge Supercapacitor?
i want use supercapacitor provide backup power ds3234 rtc.
i stuck how charge capacitor , not have discharge through charge circuit when power goes off.
the obvious solution diode these have reverse leakage , cap hold few days.
has out there used supercap rtc sucessfully? (i thought relatively common).
i found couple of complex circuits using couple of ics , several passives hoping keep it simple , small.
i stuck how charge capacitor , not have discharge through charge circuit when power goes off.
the obvious solution diode these have reverse leakage , cap hold few days.
has out there used supercap rtc sucessfully? (i thought relatively common).
i found couple of complex circuits using couple of ics , several passives hoping keep it simple , small.
what cap's own self-discharge rate, wouldn't greater diode's leakage?
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rob
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rob
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