Recent content by Tomek

Hi colleagues, this topic is the continuation of this thread: http://www.diysmps.com/forums/showthread.php?903-SG3252-SMPS-525W-Problem-with-output-power&highlight=525w As you can see after the date of the last post, a little time has elapsed, but the work is still going on. To summarize the...

Hi Silvio In the last time I rewound the transformer and here are the results: As a load I used 7 series of 0.47 Ohm resistor dipped in a glass of water. Without the output choke I got 34V on the resistor which gives 350W and 10.3A but that is not the result with the 320VDC power supply. The...

Hi Silvio I am after the first attempts to wind the transformer according to your description. I did not go perfect, I did not have a 4mm wide strip (I already bought). Transformer Pictures: 2/2 primary winding after the unwinding of the primary winding 2/2 2/2 secondary winding...

Hi Silvio Strange that earlier attachments do not work. In that case, I'll include again: Attachment 6215: http://fotowrzut.pl/TQV28CBBQ7 Attachment 6216 http://fotowrzut.pl/REKEBX9S2A I have a question about winding: 1. "Half the secondary bundles of 3 wires twisted" - Of these two litz...

Hi Silvio The oscilloscope mass is connected to the middle of the output winding. Probes to the beginning and the end of the winding. Power supply of 320VDC inverter Outputs wave form without load http://fotowrzut.pl/FG6BJUZZVN Outputs waveform with load one bulp 12V 55W...

Hi i'm a Tom and it's my first topic, I have problem with output power in my smps. In assumptions i wanted to get output voltage from 10V to 35V with regulated current from 1A to 15A. Topology: Half Bridge Core: ETD44 3C90 Frequency: 50kHz Input Voltage: 320V Windings calculated in...