= Battery eliminator circuit
{wiki=Battery_eliminator_circuit}
A battery eliminator circuit is an electronic circuit designed to provide the equivalent voltage and current of a battery to a device without actually using a physical battery. These circuits are often used in applications where a device typically powered by batteries can be operated continuously or when it is used in a fixed location, such as during testing, prototype development, or in applications where the cost or inconvenience associated with replacing batteries frequently is a concern.
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