[Amps] Switching Power Supplies

[Ian White GM3SEK]

Tony King - W4ZT wrote:
>
>The reason I chose a small switcher for my filament supply was to 
>provide a stable DC filament voltage over changing input line voltages.

In Field Day use, with more than one station hooked up to the same 
generator, there can be violent swings in the line voltage as stations 
switch unpredictably between transmit and receive. A regulated 
filament/heater supply could prevent damage due to insufficient cathode 
temperature.

I'd certainly consider a switcher for that application. There is no 
shortage of well-designed, well-shielded switchmode supplies with good 
input and output filtering.



-- 
73 from Ian GM3SEK