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Posts Tagged ‘power supply computer’

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: , , ,

200W PC power supply switching 110V-220V


view picture other switching power supply Circuits

This be PC power supply for Computer again interesting circuit. May advantage with friends at do an occupation can repair a computer? By think be the character Switching power supply 200W sizes take AC Voltge Source 2 level be 110V and 220V choose can use leisurely. And still use volt out many the group be +5V ,+12V, -12V enough will use for small-sized computer or AT power supply. When see the circuit will think use the integrated circuit IC TL494 power supply circuit be pillar equipment. Make the circuit sees not difficult or repair easy there. The detail is other , please see in the circuit better.

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Be the first to comment - What do you think?  Posted by admin - August 10, 2008 at 10:14 am

Categories: Circuit com, Power supply, Switching power supply   Tags: , ,

Old power supply computer by TL494

An elder brother of me works about repair a computer. Once meet a problem power supply Switching , of a computer s lose. It is old circuit. I then help to seek give. Get this circuit think may disagree. But enough use can replace. if friends meet same this problem try out please. It can give voltage output 5V , +12V,-12V. Use the integrated circuit TL494 be pillar equipment seek good easy.
By apply to voltage 110V and 220V choose done to a turn SW1. The detail is other a friend sees in the circuit be lucky sir.

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Be the first to comment - What do you think?  Posted by admin - August 1, 2008 at 12:31 pm

Categories: Switching power supply   Tags: , ,

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