[Amps] Power transformer for 600 watt rig

Gary Schafer garyschafer at comcast.net
Tue Mar 18 11:08:59 EDT 2008


Hi Jim,

No I don't have LTspice.

What I was saying about what type of service the power supply is to expect
to see matters a great deal. A transformer (a good one) that is to be used
with a voltage doubler might have a secondary resistance in the neighborhood
of 15 ohms.

A transformer to deliver the same power supply voltage using a choke input
filter can get by with a transformer secondary resistance of a couple of
hundred ohms.
The dynamic regulation of the latter will be fine for an AM or FM rig but
not acceptable for SSB.

73
Gary  K4FMX


> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
> Behalf Of Jim Tonne
> Sent: Monday, March 17, 2008 9:47 PM
> To: garyschafer at comcast.net; 'Amps @ Contesting.com'
> Subject: Re: [Amps] Power transformer for 600 watt rig
> 
> 
> Gary:
> 
> Do you have LTspice?  I will plug those numbers
> into the transformer model to complete the design.
> The numbers I quoted are adequate for the problem
> as stated.
> 
> - Jim Tonne



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