[hpsdr] Go linear!

[Tony Langdon]

At 02:36 PM 6/11/2007, Chris Albertson wrote:

>The other good thing about switching is they are "more green".  They
>use
>only 1/2 the power of the linear.  The linear supply converts a lot of
>what comes into it into heat.  But then radios don't use much power,
>only when you key the transmitter and that does not add up to much
>time.

This is going to become more an issue as time goes by.


>All that said this a small amount of power.  A linear supply feed from
>a
>pair of lead acid batteries would provide some very clean power.
>Charge
>then with a switching mode charger when you are off the air.

Linear supplies waste power, no matter how you arrange things.  Is 
your arrangement clean?  yes!  Green?  no, it's still wasting power, 
just not when connected to the mains.

73 de VK3JED
http://vkradio.com


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