----- Original Message -----
From: "Gary Schafer" <garyschafer@comcast.net>
To: "'jeremy-ca'" <km1h@jeremy.mv.com>; "'Amps @Contesting.com'"
<amps@contesting.com>
Sent: Wednesday, March 19, 2008 5:41 PM
Subject: RE: [Amps] Power transformer for 600 watt rig
>
>
>> -----Original Message-----
>> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
>> Behalf Of jeremy-ca
>> Sent: Wednesday, March 19, 2008 5:09 PM
>> To: garyschafer@comcast.net; 'Amps @Contesting.com'
>> Subject: Re: [Amps] Power transformer for 600 watt rig
>>
>>
>> ----- Original Message -----
>> From: "Gary Schafer" <garyschafer@comcast.net>
>> To: "'jeremy-ca'" <km1h@jeremy.mv.com>; "'Amps @Contesting.com'"
>> <amps@contesting.com>
>> Sent: Wednesday, March 19, 2008 4:33 PM
>> Subject: RE: [Amps] Power transformer for 600 watt rig
>>
>>
>> >
>> >
>> >>> Now with good solid state diodes chokes are a
>> >> > thing of the past in power supplies that need good dynamic
>> regulation.
>> >>
>> >>
>> >> I thought you said a tuned choke was needed for that?
>> >>
>> >> A swinging choke and a low value cap can provide virtually identical
>> >> performance to a fat cap or string. It comes down to a trade off in
>> whats
>> >> available and at what cost as well as size, weight and longevity.
>> >>
>> >
>> > No I said that if you were going to use a choke that it should be a
>> tuned
>> > choke. There is no way that you will get good dynamic regulation with a
>> > regular choke or a swinging choke in an SSB power supply verses a
>> > capacitor
>> > only filter.
>>
>>
>> And you continue to dance to your own drummer and ignore over 70 years of
>> proven application.
>>
>>
>> Static regulation may be fine with a choke but not dynamic
>> > regulation.
>>
>>
>> That makes absolutely no sense.
>>
>>
>> >
>> > Look again at what Jim Tonne posted and look at his spice model and you
>> > will
>> > see the large dip as the load is supplied and the ringing.
>>
>>
>> Models are only as good as the modeler. Ive no interest in reinventing
>> the
>> wheel and wasting my time on supplies for SS.
>>
>>
>> > Maybe Jim will post the model of the high voltage supply he is working
>> on.
>>
>>
>> Id rather see the actual supply results.
>>
>> Carl
>> KM1H
>>
>>
>> >
>> > 73
>> > Gary K4FMX
>
> I would suggest that you might want to read some of the modern stuff on
> power supplies but if you have no interest and feel it is a waste of time
> then this discussion is pointless.
It became pointless when you started insisting that a swinging choke was
useless for SSB.
I suggest that you quit while you arent too far off in the woods yet.
My comments were based upon solid engineering principles. I just did a
Google on "swinging choke" and suggest you do the same. The math presented
shouldnt be too hard for you.
Except for some of the usual drivel mixed in with reality on a 2000 AMPS
thread they all support my contentions. So does any engineering or technical
handbook.
Please dont bother replying if it is only to keep repeating the same wrong
stuff.
As far as modern supplies are concerned I dont dismiss them, just ignore
them for the moment as they are not related to this specific threads subject
matter.
Carl
KM1H
>
> 73
> Gary K4FMX
>
>
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