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MF GRP
Apart from having a few in the junk box is there
any advantage over a similar spec FET, ie reliability esp class E
de mal/g3kev
----- Original Message -----
Sent: Monday, July 20, 2009 11:18
PM
Subject: RE: LF: Re: IGBT in 136 KHz
TX?
Jeff, Rik, Markus,
Mouser GB sells the STGW30NC60WD
IGBT, at £3-60 each. See the link below. You can download a data
sheet from the same site.
Farnell UK also sell them:-
73,
Dave G3WCB IO91RM
Hello Markus and Rick!
I have only just acquainted myself with your
messages.
(Just going out from hospital, big blood pressure
problem...)
Thanks a lot for precious information, of what
make fun still!
I recovered some ferrites N87 types which
should work in 137 KHZ.
Another subject interests me, it is the
possibility of transmitting with a big spool of several turns (a bit as
WD2XDW). But EIRP is much weaker than with a vertical aerial, then it
is necessary to "push more" in power!
VY 73: Jeff
----- Original Message -----
Sent: Friday, July 03, 2009 10:07
AM
Subject: Re: LF: Re: IGBT in 136 KHz
TX?
Jeff, Marcus,
STGW30NC60WD has a turnoff delay of
120ns. Turn on delay and rise / fall times are better than 30ns.
That
should be good enough for 137kHz, maybe even for 500kHz.
It further has
a max. Collector-Emitter Voltage of 600V, max. Collector
Current of 60A (200A pulsed), max.. dissipation of 200W and a saturation
voltage of 2V (@20A).
Looks like a good "workhorse" for those
who want to experiment with IGBT's.
73, Rik ON7YD -
OR7T
At 22:05 26/06/2009, you wrote:
Dear
Jeff,
havn't actually tried it myself
on 137 kHz. But from past experience I'd say that while IGBTs may have
less DC loss, they are much slower (especially during turnoff). They can
be used as effient switches at some tens of kHz, whereas MOSFETs will
easily go up to several MHz.
Kind
regards,
Markus, DF6NM
- ----- Original Message -----
- From: F6CWN
- To: [email protected]
- Sent: Thursday, June 25, 2009 11:37 PM
- Subject: LF: IGBT in 136 KHz TX?
- Good night to all,
- Anybody would have any experience on the use of IGBT
in 136 KHz amplifiers?
- Thanks in advance!
- 73: Jeff / F6CWN
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