[Elecraft] KPA500 - linear power supply

[ac5p at sbcglobal.net]

--- On Wed, 5/11/11, Phil & Debbie Salas <dpsalas at tx.rr.com> wrote:
 
 The unregulated linear power supply is heavier than a switcher.  However, it 
is also more efficient and less complex.  Everything is a trade-off.
 
Agreed on the heavier and less complex, but as for effieciency, it has been my experience that the linear takes more current (to charge the pwr xfmr core, regulation system, etc.) in the standby mode than does the switcher.    
 
Agree with others on the switchers being RFI generators.  Not good for sensitive receivers.
My supply heavier than most being a 55Ah Optima Yellow top gell cell battery with float charger.   Very well filtered!
 
Mike  AC5P