Hello friends,
I am working on a solar powered battery charger for three NiMH cells. Panasonic recommends a few different charging methods, while not ideal I have opted for upper battery voltage limited for simplicity's sake.
So, with each cell at 1.2V I would like to create a shunt to ground that will engage at 5V and an additional shunt that will disengage at 2.4V.
My initial thought was diodes, but I'm not sure this is practical. I was thinking of multiple diodes in series to create 5V total forward voltage, but this would be several diodes and my gut tells me this is not a good solution. Are there diodes designed for specific forward voltages to accommodate a shunt like this?
Thanks!
I am working on a solar powered battery charger for three NiMH cells. Panasonic recommends a few different charging methods, while not ideal I have opted for upper battery voltage limited for simplicity's sake.
So, with each cell at 1.2V I would like to create a shunt to ground that will engage at 5V and an additional shunt that will disengage at 2.4V.
My initial thought was diodes, but I'm not sure this is practical. I was thinking of multiple diodes in series to create 5V total forward voltage, but this would be several diodes and my gut tells me this is not a good solution. Are there diodes designed for specific forward voltages to accommodate a shunt like this?
Thanks!