{1139} Joule thief circuit, blocking oscillator, joule ringer

In this video number {1139} Joule thief circuit | blocking oscillator | joule ringer | vampire torch. I explained joule thief circuit or self-oscillating circuit or blocking oscillator or vampire torch circuit or joule ringer circuit. It is is a minimalist self-oscillating voltage booster. it is small, low-cost, and very easy to build, typically it is used for driving small loads, such as driving an LED or multiple LEDs using a 1.5 volt battery. It can use nearly all of the energy in a single battery cell. Even far below the voltage where other circuits consider the battery fully discharged (or "dead"); hence the name. its this behavior suggests the notion that the circuit is stealing energy or "joules" from the source – the term is a pun on "jewel thief". The circuit is a variant of the blocking oscillator that forms an unregulated voltage boost converter.

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