This article explains how to extend the battery lifetime of a device by adding a nanopower converter to an existing system, ...

An ammeter tells you the current, or the flow of charge through the circuit, measured in amps ... ‘voltage’. A voltmeter can be used to measure the potential difference produced by a cell or ...

[Afroman’s] latest video shows you how to add reverse voltage ... side of the circuit. The gate is hooked to ground, allowing current to move across the DS junction when the battery is connected.