daviddeakin
New member
I have a hankering to make a high-voltage SMPS, but I want to avoid having to wind my own transformer.
I have been looking at some old off-line ATX power supplies, and they all seem to use a half-bridge to step down half the supply voltage (about 300Vdc where I live) to +/-12V etc. I think the supplies I have are similar to this circuit: http://www.eejournal.org/wp-content/uploads/2010/10/PC-SMPS-2003-schematic1.gif
Therefore, can I simply use the same transformer, but backwards, driving the 12-0-12V winding with a push-pull switcher to get about 150V on the 'secondary'? Bascially, can I use something like this, but substituting an ATX transformer instead of a hand-wound one? (I'm an EE, but I know very little about SMPUs, so be gentle with me! ((@ )
I have been looking at some old off-line ATX power supplies, and they all seem to use a half-bridge to step down half the supply voltage (about 300Vdc where I live) to +/-12V etc. I think the supplies I have are similar to this circuit: http://www.eejournal.org/wp-content/uploads/2010/10/PC-SMPS-2003-schematic1.gif
Therefore, can I simply use the same transformer, but backwards, driving the 12-0-12V winding with a push-pull switcher to get about 150V on the 'secondary'? Bascially, can I use something like this, but substituting an ATX transformer instead of a hand-wound one? (I'm an EE, but I know very little about SMPUs, so be gentle with me! ((@ )