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@elektryczny_mariusz: The diode bridge circuit was invented by Karol Pollak and patented in December 1895 in Great Britain[3] and in January 1896 in Germany.[4][5] In 1897, Leo Graetz independently invented and published a similar circuit.[6][7] Today the circuit is sometimes referred to as a "Graetz circuit" or "Graetz bridge".[8]
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