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    Alternator Basics

    Like what?? Google is a wonderful search tool... there's lots out there.
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    Problems with DC/DC converters in isolated H-Bridge design

    That might relate to your problem... more often than not, the regulation (if any) on bipolar supplies is done across both outputs
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    Problems with DC/DC converters in isolated H-Bridge design

    These are dual supplies... are you using only one side, 15V, or are you running it  as a 30V supply? There is a data sheet warning not to exceed 1W
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    Problems with DC/DC converters in isolated H-Bridge design

    Are you sure about that part #??? NMC series???
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    Anyone familiar with Surface Mount Technology (SMT)?

    Yes... what about it?
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    Alternator Basics

    KevinIV, what do you think the advantages are over a genarator that has a field winding??? And after you explain that, explain to everyone what role the strength of the flux field has to do with how much power you can get out of a "genarator".
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    DC/DC Converter (the proper diode)

    Definitely not true. Many factors are considered when selecting diodes in DC-DC
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    Alternator Basics

    An alternator does not have any magnets in it. Google PM motors, altenators and generators (a DC motor run "backwards")... plenty of info on how they work. The field isn't really "rotating", the commutator changes the flux direction on the rotor pole windings to repel against the field windings...
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    DC/DC Converter (the proper diode)

    That is correct, but that is a minimum... go a bit higher to account for any spikes.
  10. I

    Sourcing high voltage isolation switch for 150V @ 40A

    For those kind of current levels, look into "mercury contactors".
  11. I

    opamp roll-off

    I was thinking I should have asked that no one give him any hints or the answer
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    opamp roll-off

    KevinIV, where do you get this stuff ... do you just make it up as you go along??? Get a good electronics book, read it, study it and get a good grasp of the fundamentals. You "claim" you "... extend the bandwidth of an opamp by reducing gain". Now ponder the difference between extending the...
  13. I

    MEASURING OF REVERSE RECOVERY CURRENT

    Reverse current and reverse recovery current are not the same thing. Ultra-fast and fast recovery diodes have a much longer Trr time (hence a higher reverse recovery current) when compared to Schottky
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    Current Limiting Technique

    Don't forget the inductance of the wiring.
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    100 amp power supply design

    If the linear amp is for his ham radio, I'm surprised it only needs 13.8V. As for a 100A 13.8V (1.38KW) linear power supply... while it could be done, it's not very practical. The transformer alone must be as big as a boat anchor and weigh just as much, whereas a 1 KW switching supply power...
  16. I

    3 stage battery charger question

    Go to http://www.ti.com/ and look up UC3906, application notes U-131 & U-104.
  17. I

    NEED HELP WITH PART ID

    Might be General Semiconductor (www.gensemi.com)
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    Integrated circuits

    Sorry, but I have to ask.... KevinIV, do you have any formal electronics schooling? Do you work in the industry or is your intrest as a hobby? Google "SoC" (system on a chip) that is a good example as to "how complicated they can be".
  19. I

    Designing generators

    Power is power... it's not a question of the generator, but rather "the wind". For example (silly perhaps), in a hurricane you could
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    Power supply air flow

    How much power is going to be dissipated buy the power supply? What
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