Re: Batteries in SR-16

From: Joerg Woerner
Email: joerg@datamath.org


Dont do this !!! The display is driver directly by the 3*AA cells, only chip voltage is generated by DC/DC converter. Current through LED is 3*AA cells minus driver saturation voltage minus LED voltage divided by limiting resistor. NiCd. 3.7V - 0.8V - 1.5V = 1.4V Batterie: 4.5 V - 0.8V - 1.5V = 2.2V Current is more than 50% too high ! Joerg