A joule thief is a minimalist Armstrong self-oscillating voltage booster that is small, low-cost, and easy to build, typically used for driving light loads. It can use nearly all of the energy in a single-cell electric battery, even far below the voltage where other circuits consider the battery fully discharged; hence the name, which suggests the notion that the circuit is stealing energy or "joules" from the source. The term is a pun on the expression "jewel thief": one who steals jewelry or gemstones.
Homemade Emergency Joule Thief. This very simple Inverter can take very little voltage to Boost Set Up AC or pulsed DC to turn on 120v or 220v / 1.5w to 5 watt LED Bulbs or 5w. fluorescent lamps can be achieved. Yes! to steal all the last energy from any 12v, 9v, 6v, 3.7v, 3v, 1.5v, 1.2v Battery. Super Efficient DIY Testing using Oscilloscope known as a "scope", to see the form of the wave or "waveform" can be analyzed for such properties 1. Amplitude 2. Frequency 3. Time. Save your money to get more effect!
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