2009/5/6 Forrest W. Christian <forrestc@imach.com>:
> Dave Tweed wrote:
>> Think aobut it ... what happens if you drive the switch in a buck
>> regulator with a fixed 50% duty cycle control waveform?
>>
> If the answer is you get 50% of the input.. then I have a widely
> distorted picture of a buck regulator. =A0 I guess I need to do some more
> research, and need spend some time on a breadboard....
>
> Because my mental image of a buck regulator indicates that a 50% duty
> cycle into a buck regulator (aka switch into an inductor and capacitor
> 'filter'), will rarely, if ever produce 50% of the input DC voltage on
> the output. =A0The actual output voltage will vary based on load.
>
> So... I'll run off and play with this.. and a simple flyback converter
> as well.
>
> -forrest

You could try the simple push-pull converter also. Two switching
devices, a transformer and a resistor & cap or 2..

RP

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