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Switching supply computer 5V 15A 12V

Today I leads Switching supply computer Circuit. Come to give friends in see again. By this circuit has can to give electricity pressure 5V 15A,-5V 1A,12V 10A,-12V 1A and have can to give the electric power about 200W. I hope that this circuit may in rows checking meditation repairs a computer has of friends. By think use the integrated circuit number TL494 again. And still use the transistor power as well. May repair not difficult be lucky sir.

Source : do not know the source.

Be the first to comment - What do you think? Posted by admin - August 28, 2008 at 4:27 pm

Categories: Circuit com, Switching power supply Tags: 12V voltage regulator, 5 volt regulator, Circuit com, Switching power supply

250W Computer supply china circuit

A friend of me inquires about power supply switching circuit. Which produce from the People’s Republic of China model the circuit is all. Be the Chinese seek difficult many circuits. I then try to seek many circuit. Meet this circuit. Think may yes. Because of there is the Chinese controls all equipment detail. But must beg one’s pardon friends. With that model the circuit not clear however might enough in rows the profit ? A few the a little when see good as a result see equipment position understands not difficult extremely. There is the integrated circuit TL494 with and can give voltage output get +12V,-12V and +5V support using has usually.

Be the first to comment - What do you think? Posted by admin - August 18, 2008 at 11:08 am

Categories: Circuit com, Switching power supply Tags: China circuit, Circuit com, power supply computer, Switching power supply

LCD 2 USB by Atmel AVR Mega8 CPU

LCD2USB is a open source/open hardware project. The goal of LCD2USB is to connect HD44780 based text LCD displays to various PCs via USB. LCD2USB was meant to be cheap and to be made of easily available parts. It is therefore based on the Atmel AVR Mega8 CPU and does not require any difficult to obtain parts like separate USB controllers and the like.

LCD2USB is currently supported by lcd4linux (LCD2USB support is built-in), LCD Smartie (requires a seperate driver), and LCDProc (LCD2USB support is built-in). The hardware of the LCD2USB interface consists of the Atmel AVR Mega8 CPU, a cheap and easy to obtain microcontroller with 8 KBytes flash (of which ~3k are used in this application) and 2 KBytes RAM. The processor is surrounded by few parts, mainly connectors to interface to the PC and the LCD. A power LED (LED1) indicates that the system is powered via USB. The system clock is derived from a 12Mhz crystal….

Source: http://www.harbaum.org/till/lcd2usb/index.shtml