Hello! I'm using three NiMHs, but the circuit overdischarges them to about 0.6v before it finally turns off. Someone told me you should never discharge a NiMH past 1 volt; in fact, the mAh rating on the battery is based on a discharge test to 1v.
So since I'm using 3 batteries, I would want the circuit to be disconnected when the battery voltage reaches 3v or lower. Could I use a 3v zener diode for this? The way I understand a zener diode, is that ALL current/voltage can flow in one direction, but in the other direction, current will only flow if it is above the Zener voltage.
So if I put a 3v zener diode in series with the red positive wire coming out of my battery, it will allow the full 4.2 volts/whatever amps to flow, without any resistance or impedance, until the batteries drop below 3v, then it will open the circuit and stop it from discharging, right?
Stop circuit from overdischarging 3 NiMHs - 3v zener?
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- moeburn
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Please be positive and constructive with your questions and comments.