[Amps] Filament Suppy, Info for G8WRB

[Dr. David Kirkby]

On 07/ 3/11 01:49 AM, Alek Petkovic wrote:
> David, I've deleted the emails on the switchmode filament supply thread
> but here is some info which may or may not be helpful.
>
> Go to http://f1frv.free.fr/
>
> Scroll down to AMPLIFIERS SLOW RISE HEATER REGULATED SUPPLY
> <http://f1frv.free.fr/main1f_Soft_Start.html>
>
> 73, Alek
> VK6APK

Thank you. It's a bit hard to make use of, as I only know English.

I see the link to eBay for 5 V SMPS, but any I've found can only be trimmed +/- 
10%, so giving a maximum output voltage of 5.5 V, so it seems that one will have 
to be lucky to find a SMPS which works to 6 V.

That's why I looked at a 7.5 V SMPS. I doubt that can be trimmed to 6.0 V, but 
at least one can drop the 1.5 V with a resistor.

Your not the first to suggest a 5 V SMPS, and I doubt you will be the last, but 
getting 6.0 V seems outside the spec of any I have found.

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