Because some of us have bags of transistors gathering dust?
What I need is some equally cheap inductors..
75 turns on a half inch form? ( don't know if I trust these online calculators)

What frequency does it humm?



At 08:51 PM 7/8/03 -0500, you wrote:

>>>This Independence Day I designed a couple of small cheap switching
>>>regulators that use very few parts and make 5 volts from 1 battery cell.
>
>I've seen a number of these designs on the PICLIST from time to time.
>Why build this out of discrete components like this when you can buy
>an IC based item?  Is it a cost thing, or does this give better results, or
>is it just a "because I can" type of thing?
>
>Not to undermine your work, mind you, I think it's just spiffy, but why?
>
>Mike H.
>
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