Low-power to run a variety of devices lm2585-adj made with simple solar power system 6V dc converter 15v can be useful
Using the LM2585 (NationalSemiconducter), I tried to assemble this time. I’ve lost my output to 15V/400mA. Input at this time, in a reasonable 73 percent conversion efficiency in 6.8V/1.2A. Referring to the documents of the company, was, R2 = 4.7K R1 = 56K circuit but I guess good in R1 = 47K and to lower a little more. .
Solar Power LM2585DC DC Converter
Source: geocities.jp Solar Power Project schematic files alternative link:
Simple Solar Panel, Solar Power Project LM2585 DC DC Converters
Password: 320volt.com
Published: 2009/02/02 Tags: dc dc converter circuit, power electronic projects
PIC16C74 Embedded 10BaseT Ethernet CS8900
Embedded ethernet enables microcontroller based projects to send and receive packets over the network. The board shown on the left is actual size and incorporates all the circuitry needed to enable 10BaseT communications. The board is designed to minimize the pin count needed to interface with microcontrollers. An 8 bit data bus, 4 bit address bus, and three control signals (15 signals) with an optional interrupt signal are all that is needed to control the board. This is made possible by using the Crystal CS8900 ethernet transceiver running in 8-bit mode. All the information, schematics, and source code needed to perform TCP/IP communication over ethernet is detailed on this page. I’m using a Microchip PIC16C74 controller in this project however, any controller with enouph port capacity will also work. This would include the popular Motarola 68HC11.