I think making the switcher "ramp up" is pretty easy as most of them already
ramp up their voltage at start up by varying the pwm duty cycle. I've done
quite a bit of experimentation on this for a smps I am making. I don't think
it would be a great leap to have the voltage quickly come up to 10% less or
whatever is desired, then increase over some time as the current draw
decreases.
Paul, kg7hf
From: TexasRF @ aol .com
Subject: Re: [Amps] Switching Supplies for High Current Filaments
To: jim . thom @ telus .net, amps@contesting.com
Message-ID: <1d65b.1491fc92.39de8d3b@ aol .com>
Content-Type: text/plain; charset ="US-ASCII"
The solution to the over current problem is reducing the startup voltage
enough that the 10% filament resistance still draws rated current. That takes
10% voltage according to ohm's law.
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