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Message-ID: <78E135BF916345EE933DF6E8F3FB81D4@PcMinto>
From: Minto Witteveen <minto.witteveen@gmail.com>
To: <rsgb_lf_group@blacksheep.org>
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In-Reply-To: <4D2F736C.6010001@iup.uni-heidelberg.de>
Date: Thu, 13 Jan 2011 23:09:57 +0100
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Subject: Re: LF: FET RDS
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Stefan,

You mentioned the IXDD414 in a previous message here on the reflector,=
 and I=20
immediately downloaded the datasheet. The IXDD414 certainly looks very=
=20
promising and I plan to experiment with it as soon as we are allowed=
 back on=20
500.... Now if I can just find a supplier here in PA who stocks this=
 chip.
My original 500 KHz design was for linear operation (so I could use ps=
k31)=20
but I only made one qso in PSK, the rest in ordinary CW. A new design=
 can=20
and will be much simpler.

Thanks for the info.

Regards,
Minto pa3bca


--------------------------------------------------
From: "Stefan Sch=E4fer" <schaefer@iup.uni-heidelberg.de>
Sent: Thursday, January 13, 2011 22:49
To: <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: FET RDS

> Minto,
>
> 14 nF gate capacity can easily be driven by a IXDD414, at 500 kHz an=
d even=20
> at 1800 kHz. I've built a 600W class E for 160m running at 36 VDC (f=
or /p,=20
> 3 car batteries in series ;-) ), using 4xIRFP260N. Efficiency is abo=
ve 90%=20
> but mostly due to losses in the coils ( i like to built it compact=
 :-) ).
>
> 73, Stefan/DK7FC
>
=20