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From: "Ken" <ken.h.wright@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
Date: Sun, 10 Jun 2012 21:28:01 +0100
Message-ID: <169445B98101449D93BF2125A7343EF1@lindavideo>
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Subject: LF: Class d & E PAs
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Dear All.

Thank you for your help on the DECCA info, so far I have not tried a Class D
or E PA , my 500kHz TX having a power MOSFET in pseudso Class C, with Class
D & E how is the PA output impedance calculated, for the output transformer,
would it be permitted to use either a Pi or L-C_L (as I have done) to match
the PA to the variometer and loading coil? .

 

73s

 

Ken

 

M0KHW


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<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-GB =
style=3D'font-size:
10.0pt;font-family:Arial'>Dear All.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-GB =
style=3D'font-size:
10.0pt;font-family:Arial'>Thank you for your help on the DECCA info, so =
far I
have not tried a Class D or E PA , my 500kHz TX having a power MOSFET in =
pseudso
Class C, with Class D &amp; E how is the PA output impedance calculated, =
for
the output transformer, would it be permitted to use either a Pi or =
L-C_L (as I
have done) to match the PA to the variometer and loading coil? =
.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-GB =
style=3D'font-size:
10.0pt;font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-GB =
style=3D'font-size:
10.0pt;font-family:Arial'>73s<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-GB =
style=3D'font-size:
10.0pt;font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-GB =
style=3D'font-size:
10.0pt;font-family:Arial'>Ken<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-GB =
style=3D'font-size:
10.0pt;font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span lang=3DEN-GB =
style=3D'font-size:
10.0pt;font-family:Arial'>M0KHW<o:p></o:p></span></font></p>

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