DC to DC converter circuit size and quite a lot of small passive components used PWM control TL494 SMD type Matchbox output coil in comparison with the size of the image of the PC power supply-12v -5 volts output... Electronics Projects, PWM TL494 Boost Converter Circuit DC DC 12V to 25V "dc dc converter circuit, power electronic projects, pwm circuits, tl494 circuit, " Date 2019/08/02