66% or better

Double the battery life with a new voltage regulator


[Alexander] sent in his instructable on upgrading the inefficient linear regulator in a DX3 RC radio transmitter to double the battery life. I’m actually more interested in the switching regulator (high res image) than the radio – this could be really useful. $15 to replace a $1 component hurts a bit – but it has the caps and coil needed to support the switching regulator.