High frequency SMPS - Electronic Circuits Projects Diagrams Free

Firnagzen · 8th April 2007, 06:45 AM

Hi, I'm a bit baffled by those switching mode power supplies found in computers, why need they be so complicated? As I understand it, high frequency + transformer= higher current handling capability, smaller transformer. But then, can't I just rectify the mains voltage, send it through a MOSFET driven by a 555 or something, and send that into the transformer?

Yes, I understand a good deal of the circuitry is to provide other voltages and safety. But still...

Also, what makes a high frequency transformer a high frequency transformer? (Core, windings, what?)

mvs sarma · 8th April 2007, 07:04 AM

Hi,

Best way is to take a smps primer and go thro' roughly.

therafter take up one manufacturers design data and it will describe the design of smps tranformer design creteria indetail.

they have even calculators for realizing a transformer for a specific need.

Firnagzen · 8th April 2007, 07:20 AM

Ok, thanks. I'll try to look up one, or have you any reccomendations?

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8th April 2007, 06:45 AM	(permalink)
Firnagzen	High frequency SMPS Hi, I'm a bit baffled by those switching mode power supplies found in computers, why need they be so complicated? As I understand it, high frequency + transformer= higher current handling capability, smaller transformer. But then, can't I just rectify the mains voltage, send it through a MOSFET driven by a 555 or something, and send that into the transformer? Yes, I understand a good deal of the circuitry is to provide other voltages and safety. But still... Also, what makes a high frequency transformer a high frequency transformer? (Core, windings, what?)

8th April 2007, 07:04 AM	(permalink)
mvs sarma	Hi, Best way is to take a smps primer and go thro' roughly. therafter take up one manufacturers design data and it will describe the design of smps tranformer design creteria indetail. they have even calculators for realizing a transformer for a specific need. __________________ Regards, Sarma.

8th April 2007, 07:20 AM	(permalink)
Firnagzen	Ok, thanks. I'll try to look up one, or have you any reccomendations?