How to get 3.3V from 2 AA batteries?
14016
Least expensive way to boost DC voltage
7084
ADC for measuring 0-5V but connected to 3.3V device
148501
USB charging at 4.3 volts
109741
Batteries and fields?
35421
How do I convert 9 V DC to 5 V?
77248
How to scale and shift voltage signal?
1828
How do I sample a -2 V to +2 V analog signal with a PIC microcontroller?
101263
Measuring an Arduino's power source voltage using Analog In
77631
Powering Arduino from a voltage divider
45078
Shifting -5 V to +5 V signal to 0 to +5 V for ADC
33827
Basic circuit voltage question - Using a driver to control a stepper motor
131932
How to create bipolar power supplying from Powerbank 5V 3A
125202
Conversion from microvolt to volt
115593
How to measure line voltage (220V) with an arduino?
137995
Powering a circuit from either USB or LIPO
147687
Practical way to generate 1500V?
58478
Better way to divide voltage for input to an ADC DAQ?