st777The ST777778779 are dc-dc converters that step-up from low voltage inputs requiring only three external components, an inductor (typically 22µH) and two capacitors. The device include apascha17.07. PaschaQ7 · оригинальный звук - St777 . 80Likes. 9Comments. 0Shares. pascha17.07. PaschaQ7 · Solina