All Forums  Electronics  Power Supply  Centertapped primary step up transformer problem

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by Scott McKie[/i] [br]I am trying to build a 12 vdc to 153 vac - 200 mA output step up transformer system. I'm using a 555 into a 4027 to generate the dual 50/50 duty cycle square wave signals. The outputs are going through 4020 4 Amp MOSFET drivers into two IRF740 MOSFETs. The signals are beautiful until connected to the transformer which has been unwound and rewound with Lits Wire to gain the required AC voltage level output. But the system seems to only work when only one input signal is connected. When both signals are connected; there is no operation shown on a CRT screen; both levels are at ground level. What am I doing incorrectly. Please help; as this is the last part of a very long but successful electric power R&D project. The 153 AC voltage will be rectified to 108 vdc to be used for the high voltage input to a resonant tank circuit; and if there is a better way to get the required AC voltage and amperage, then I am all ears. Please help. [/quote]    Insert an Image File (GIF, JPG, JPEG, BMP, ZIP, PNG) Check here to include your profile signature.