self-osc smps using some salvaged parts from damaged ATX psu...
survived for more than 1hr continues run test with 210W loads... each bulb is rating 21W+5W@12V but I only used 21W/12V filament... 2 bulbs are connected in series to handle 24V supply and all of them are 10pcs connecting in series parallel, so the total must be 210W... transformer is direct picked from old atx, thus its windings are originally the same but can be dismantled and manipulate the windings according to your desired voltage outputs... http://www.elab.ph/forum/index.php?topic=40245.msg896070#msg896070
survived for more than 1hr continues run test with 210W loads... each bulb is rating 21W+5W@12V but I only used 21W/12V filament... 2 bulbs are connected in series to handle 24V supply and all of them are 10pcs connecting in series parallel, so the total must be 210W... transformer is direct picked from old atx, thus its windings are originally the same but can be dismantled and manipulate the windings according to your desired voltage outputs... http://www.elab.ph/forum/index.php?topic=40245.msg896070#msg896070