Switch Mode DC DC Adjustable Power Supply The TL494 system is the heart of the stabilizer. Elements C13-1.5NF, R14-10K set the frequency of the internal generator work to about 77 kHz. Comparator first, along with elements R7, R8, R9,... Electronics Projects, Adjustable Switch Mode Power Supply 0.25V 0.5A TL494 "dc dc converter circuit, power electronic projects, tl494 circuit, " Date 2019/08/04