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Today we are reviewing an unusual converter, usually they either increase or only decrease the voltage, and this one can do both! The module is made on the XL6019 microcircuit, which is almost a copy of the already known XL6009. Unlike most step-up converters, the module is able to completely turn off the output voltage. http://ali.pub/2drrcb XL6019 SEPIC from the review http://ali.pub/2drs6u XL6019 SEPIC cheaper http://ali.pub/2drsb4 XL6019 SEPIC 10 pieces http://ali.pub/2drskn Dual converter LM2577S LM2596S http://ali.pub/2drsqo Dual converter XL6009 LM2596S http://ali.pub/2drswb Good old XL4015 http://ali.pub/2drt68 Good old XL6009 http://www.kit-e.ru/articles/circuit/... article about SEPIC