How many Amp-Hours of capacity are needed? 1. Create a power budget to determine What type of batteries? 1. See Battery Universityfor more information Are the batteries rechargeable? 1. NiCd, NiMH, LIB, LiPoly? Different tradeoffs of cost, memory, lifetime, weight 2. Need a charging circuit. See Maxim. First, check the data sheet for the voltage regulator and see if it specifies values for the input and output filtering capacitors. If it does not, the rule of thumb is to use 0.33 µF ceramic non. The language “AC adapter” and “AC power supply” is used inconsistently. Sometimes it refers to regulated power supplies with a fixed. There are three major types of voltage regulators that you will encounter in this program: Linear voltage regulator - burns off extra power in the form of heat 1. Advantage: High current.