[Qucs-help] Ideal Transformer

[Ramiro A. <ea...@gm...>]

Hi all,

I am new to this list. In the past I was using ngspice, but I was tired 
of making circuit netlists by hand. So I discovered QUCS and wanted to 
change. I like it very much, it also cames with stripline and filter 
desing. Very valuable for me and my amateur radio experiments 
(http://ea4nz.ure.es/sdr.html)

Today I did some stupid simulation just for test, and I was puzzled with 
the results.

I place an ideal 2:1transformer. At the input, a DC source in series 
with an AC 1 MHz source and a 50 ohm resistor. At the output, a 50 ohm 
load. After transient simulation, I expected no DC voltaje at the 
output, but it was present.

What am I missing?

I will appreciate your help. Not sure if I can send attached files to 
the list.

Ramiro. EA4NZ.