Electronics Lab Philippines

Understanding Laptop Motherboard Power Circuits

Offline min

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Understanding Laptop Motherboard Power Circuits
« on: December 01, 2012, 08:26:28 AM »
Mga masters and Technical people please help explain kung paano nag wo work ang circuit na ito.

Hindi ko kasi maintindihan kung paano na convert to 3V ang B+ nya. Parang push pull operation pero wala naman rectifier diode sa dulo? Coil lang DC output na.

Anu ang kaibahan ng operation nito sa common types ng switching power supply circuits?



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Offline DJFEL

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Re: Understanding Laptop Motherboard Power Circuits
« Reply #1 on: December 01, 2012, 09:11:41 AM »
sub...
dj fel on the mix

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Re: Understanding Laptop Motherboard Power Circuits
« Reply #2 on: December 01, 2012, 04:09:24 PM »
mukhang ganito yan sis yung B+ medyo mataas yan ng kunti(supply source). Pq20 yung magbibigay ng supply voltage, yung pq22 ang magreregulate ng Vout by leaking excess voltage to ground. Lx 3v line siguro yung feedback.

hula ko lang.


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Offline min

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Re: Understanding Laptop Motherboard Power Circuits
« Reply #3 on: December 01, 2012, 04:58:31 PM »
^email sent sis.

Ang bilis siguro ng control frequency nito?
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