30 mADo you mean 30mA or 0.3mA?
I require a permanent outdoor weatherproof solar power supply solution to simulate/replace Lithium 123 Voltage of 3.3VAre only willing to use a 12V battery? If a lower battery voltage is acceptable you could use a charge pump regulator. The cost is low and they are suitable for low currents.
But how much juice do these buck converters suck back from the battery. Can’t find those specs.Search ebay using "3.3 volt buck converter"
They start at $0.99 with free shipping
I can't build one, for that price ...
Aye, there's the rub.But how much juice do these buck converters suck back from the battery. Can’t find those specs.
by Duane Benson
by Duane Benson
by Aaron Carman