Switched dc 3.3v switched 12 volt dc voltage converter circuit allows reducing the 3.3 volt output. LM2575 operating frequency of 52 kHz to 1 amp of 80% power efficiency.
LM2575 step-down (buck) switching regulator
LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.
3.3V DC to DC Converter Circuit LM2575 Power Supply
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Published: 2011/01/28 Tags: dc dc converter circuit, power electronic projects
8051 programmer circuit ZIF + USB Powered
8051 programmer circuit 40-pin, 20-pin RS232 COM port processor designed for programming is done from the 5v USB input for feeding there. There are circuits in the installation program, but the menu icons the chinese language to be solved for the use or alternative programs you can try. Pcb circuit diagram, you can open files with protel99s.