Recent content by dracu_n_dulap

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    Coupled output inductor design

    Thank you very much for your answer. My, lenghty, question was: for wich inductance do i select the size of the core? For the 7µH resulted from the calculation?
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    Coupled output inductor design

    Hello everybody! I have a question about coupled output inductor design. Reading this paper from unitrode, i undestood the physics behind it, but not completely... In the example a forward converter is given with 2 outputs, one is 5 volts 20 amp ( 100 watts ) and the other 15 volts 5 amp ( 80...
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    HEX file for project

    I hate this type of kits too. They try to maximize they're profit by making you buy another preprogrammed PIC if something happens to the one in the kit. They also have Do It Yourself in the name of the site, it should be Buy It Yourself. I will try to write one my self, see what comes out ;D...
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    HEX file for project

    yes, you're right. you have to buy the kit, but it is a bit expensive. :( i thought that someone has read the pic and has it  ;D
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    HEX file for project

    Does anybody has the hex file for this project http://electronics-diy.com/lc_meter.php ?
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    0-30V Stabilized Power Supply

    I have modified the schematic and the part list. It now has R22 at 1/4W, then i gave names to the emitter resistors and put their values in the parts list, the same with the 10v zener and D7. Hope no one minds. :P
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    0-30V Stabilized Power Supply

    Hi! I've built this psu and it works great :D but I was wondering why is R22 (in the latest schematic) a 1W resistor? ??? From my standpoint is just a current limiting resistor for the led, isn't it? and are 2W resistors enough in each power transistors emitter ? i've put 5w to be sure.
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    0-30V Stabilized Power Supply

    7 A..............i understand a bit expensive to order but ok i made a mistake writing the 2x30 i was thinking about something else and it doesn't have anything to do with electronics ;D was a way for me to say that i have 2 psu tanks! good luck! :D
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    0-30V Stabilized Power Supply

    so.... i'm back again to be annoying ;D to turn my psu into the 5A variant the transformer has to be 2x30V at how much amperes.
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    0-30V Stabilized Power Supply

    ;D yes allready found it and the ic too i will place an order as soon as posible. thank you.
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    0-30V Stabilized Power Supply

    Not another planet, just another continent, europe. From romania. To be honest i still have two places to ask for the opamps, but i asked for epuivalents to have a better chance at finding one of them and finnishing the psu, or even better ones, i mean some that have a higher max voltage for a...
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    0-30V Stabilized Power Supply

    hello. ;D could you please tell me if there are any other equivalents to opamps used in the final version of the schematic? because i could not find tle2141 or mc34071 thanks
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    ICL7107 ammeter

    hi! i want to build an ammeter with icl7107 for my variable power supply (the one on this site) but i ran into a problem with this  schematic because one of the inputs is tied to the ground and i cannot use it at rhe same time with this voltmeter. but the schematic on this site has floating...
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    Power Supply 0-30V

    just the question i wanted to ask. is the data recoverable? :(
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    0-30 Vdc Stabilized Power Supply

    Hello Could you please tell me what's the value of the trimmers? because in the pdf schematic of the final version they have no value. Those are the only parts that i have left to buy, and i can't wait to get this psu working.
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