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Recent content by chimera786

  1. C

    Right Half-Plane Zero Physical Manifestations and Solution Limits

    RHP zero can only be avoided with a farily low bandwidth and an educated "high" freq. pole placed at the minimum load the converter is going to power. Why? The zero moves and assuming you have learnt that a DCM converter will help you (provided you size the switch and the filter accordingly)...
  2. C

    Remote light switch power source

    dude..you'll get your self killed..no joke. Stop messing with AC unless you have the right skill sets. Go got a AC to DC mobile charger and thats your solution. Do include a fuse in series with the input..maybe some CM fitlering etc etc. If you take away anything from this..it should be this...
  3. C

    Anyone here a MC34063 guru?

    Actually, there is a an op amp and its in the file labelled 15V_3V3. Its in the other folder present in the zip file. I haven't done much work with hysteretic control and would like to get a first hand experience using it via this controller chip..but if i cant a good feel for the controllers...
  4. C

    Anyone here a MC34063 guru?

    Well.. a couple of things Ive been observing. So get ready for lengthy post. But let me state one thing: I always use LT controllers..i love them and I think the jigs provide great base templates to expand on and reach a final modifiied design. However, they are quite expensive and when Im...
  5. C

    How much power that we can get

    What your asking is a complicated question which is not going to have a straightfoward answer. I highly, HIGHLY, recommend you read one of these books. Your question and many follow up ones will be asnwered. Read the books. Abraham Pressman: Switch Power Supplies, Christopher Bassos, Sanjaya...
  6. C

    Remote light switch power source

    grab a cell phone charger (ebay) or from any where cheap...230VAC to 5V @ 1A. Easiest solution. Remember, a simple working solution, is often the best solution.
  7. C

    Right Half-Plane Zero Physical Manifestations and Solution Limits

    man oh man! the Cuk and SEPIC converters..i wish I understood them to a practical level. Yeah, the RHP zero is tricky SOB. You have two ways: Switch the topology or go discontinous and a mutual intersection of the options presented to you, is: a dcm mode FLyback. Easy to compensation, can...
  8. C

    Remote light switch power source

    What the power source?
  9. C

    Anyone here a MC34063 guru?

    Hello ! So Ive decided to use a mc34063 to drop 12V to 5V at 0.2A max loading, with a switch freq. around 100kHz. Sounds straight forward and was almost done prototyping it but second guessed myself and wanted to sim it first (just to be sure) I looked around for a model for this device and...
  10. C

    PIC18F2321 TIMR0 issue

    Hey there! This is my first time messing with the 18F series. This uC is definitely powerful.. in fact an overkill for the applications that I have been/am developing. So, I decided to baby step this uC just because the datasheet is long and had way too many jam packed features. I have been...
  11. C

    passing something to a function declared in C

    Here is what I came up with. Its not exactly what I wanted but its still in development. SO basically here what the code does: TWO buttons for input. A timer expires afters some milliseconds (interrupt service routine) and goes to a button routine. The routine checks if all buttons are pressed...
  12. C

    passing something to a function declared in C

    OK. SO cumulatively, I need to provide a pointer to my constant and then pass that pointer to the function? or a derivative of that statement I guess. Thanks for the link bigdog (lol funny) Truth be told, I am still learning programing. I have been doing it off and on for some time but during...
  13. C

    passing something to a function declared in C

    yeah I have tried the way you mentioned before and it works. But I guess I am eventually after a more generic code that could be used as a function called for multiple buttons. For instance, #define button1 PORTA.B0 #define button2 PORTA.B1 #define button3 PORTA.B2 Then in my interrupt...
  14. C

    passing something to a function declared in C

    Thanks for the insight on whats obvious :D. Now how about you explain me this: I am doing : #Define Buttonz PORTA.B0. I want to send this to the debounce function. But I am guessing that my debounce function is chnaging its type when i pass it. Any suggestions
  15. C

    passing something to a function declared in C

    Well, here is deal. I ended up creating my own debounce mechanism. The only issue is that I am defining 'button' (please see code). Now, in my interrupt I call my debounce function but I need to pass it 'button'. How can I do it without changing the 'type' of 'button' Please see attached code...
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